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Given that the lengths of two sides of a right triangle are 6 and 10 respectively, the length of the third side is______ ．
Let the length of the third side be a, when a is a hypotenuse, a = 62 + 102 = 234; when 10 is a hypotenuse, 10 = 62 + A2, the solution is a = 8
If both sides of a right triangle are 6 and 8 long, then the area of the triangle is______ ．
When 6 and 8 are two right angle sides, the area of triangle is 12 × 6 × 8 = 24. When 8 is a hypotenuse, let another right angle side be H. according to Pythagorean theorem, H = 82 − 62 = 27, the area of triangle is 12 × 6 × 27 = 67. So the answer is: 24 or 67
It is known that the area of parallelogram is 90 square centimeter, ed = 1 / 3 AD.BF=3/5 BC, OD = 2 / 5 BD, how many square centimeters is the shadow area?
Shadow: BFO, Edo
It's mainly about "BFO"!
Connect the auxiliary lines OA and OC according to the contour principle,
The area of triangle OED = 1 / 3 of oad area = 1 / 3 * 2 / 5 of oad area;
Similarly, the area of oBf = 3 / 5 OCB = 3 / 5 * 3 / 5 BOC
Add the equations and bring in the quadrilateral area to get the shadow area
In rectangle ABCD, BD is diagonal, AE is perpendicular to BD, BC and e intersect, area of triangle AOB is 54, OD = 16, OB = 9, calculate area of quadrilateral OECD (upper left corner is a, lower left corner is B, upper right corner is D, lower right corner is C; O is intersection point of AE and BD)
Leave the formula!
119.625
The three sides of a right triangle are 3cm, 4cm and 5cm respectively. How many square centimeters is the area of this right triangle
By using the Pythagorean theorem, the sum of the squares of the lengths of the two right angles of a right triangle is the square of the length of the oblique side. It is known that it is a right triangle, then it must be 3 & # 178; + 4 & # 178; = 5 & # 178;, otherwise it does not satisfy the Pythagorean theorem, so 3 and 4 are right angles, s = 3 × 4 △ 2 = 6
An isosceles right triangle, its area is 72 square decimeters, the length of his two right sides are () band analysis
12 decimeters
Using the area formula of isosceles right triangle s = 1 / 2A ^ 2, s is 72, and substituting it into the solution, a = 12 decimeters
The three sides of a right triangle are 3cm, 4cm and 5cm long respectively. They rotate around the three sides to form three geometric bodies. Imagine and tell the structure of the three geometric bodies, draw their three views, and calculate their surface area and volume
Taking the rotation around 5cm edge as an example, the direct view, front (side) view and top view are as follows: (2 points) the surface is two fan-shaped, so the surface area is s = 12.2 π· 125 · (3 + 4) = 845 π (cm2); (3 points) the volume is v = 13 π· (125) 2.5 = 485 π (cm3); (4 points) similarly, it can be obtained that when rotating around 3cm edge, s = 36 π (cm2), v = 16 π (cm3); (8 points) The front (side) view and top view are: the front (side) view and top view are: S = 24 π (cm2), v = 12 π (cm3) when rotating around 4cm edge
The length of one right side of a right triangle is 5cm, and the length of the other right side is 1cm shorter than the hypotenuse
Let the hypotenuse be x, then the other right angle is X-1
Square of (x-1) + square of 5 = square of X
The bevel x = 13
If the hypotenuse of a right triangle is 5cm long and one right side is 1cm longer than the other right side, the area of the right triangle is______ cm2．
Let the length of the shorter right angle side be xcm, then the length of the other right angle side be: (x + 1) cm. From the Pythagorean theorem, it is obtained that x2 + (x + 1) 2 = 52. From the solution, x = 3, then x + 1 = 4. The area of this right triangle is 12 × 3 × 4 = 6cm2. So the answer is: 6
It is known that the area of a square is equal to that of a right triangle, and the two right sides of the right triangle are 5 cm and 6 cm respectively
From the known area of right triangle = (1 / 2) * 5 * 6 = 15
Then the square area = side length & # 178; = 15
Side length = root 15
RELATED INFORMATIONS
- 1. There are a number of right triangle steel pieces, angle c = 90 degrees, ab = 5cm, BC = 3cm. Make a square steel piece in it and find out the side length
- 2. The perimeter of a square made of two identical isosceles right triangles is 8C, so what is the area of an isosceles right triangle? nothing
- 3. It is known that the length of the hypotenuse of a right triangle is 10, and the sum of the lengths of the two right sides is 14 Be careful
- 4. The three sides of a right triangle are 6cm, 8cm and 10cm respectively. What is the height of the hypotenuse?
- 5. As shown in the figure, divide a square with an area of 1 into two rectangles with an area of 12, then divide one of the rectangles with an area of 12 into two rectangles with an area of 14, and then divide one of the rectangles with an area of 14 into two rectangles with an area of 18. In this way, try to use the law revealed by the figure to calculate: 1 + 12 + 14 + 18 + 116 + 132 + 164 + 1128 + 1256=______ ．
- 6. There are several squares and rectangles with areas of a ^ 2, B ^ 2 and ab. one square with area of a ^ 2 and four rectangles with area of ab There are several squares and rectangles with area of a ^ 2, B ^ 2 and ab. a square with area of a ^ 2, four rectangles with area of AB and several squares with area of B ^ 2 make a big square? A. 2 B, 4 C, 6 D, 8 Please explain why,
- 7. What is the name of the first stroke of yingzi
- 8. What is the stroke order of block characters The stroke order is from top to bottom, from left to right, full encircle, last write down horizontal, half encircle, first write frame! Many people are easy to make mistakes
- 9. How to write the order of your own character
- 10. How to write the stroke order of yingzi
- 11. The lengths of the two sides are 4cm and 5cm. What is the square of the length of the third side if the triangle is a right triangle I've only worked out one answer. Let's take a look at your department
- 12. On a drawing whose scale is one thousandth of a thousand, the area of a square is sixteen square centimeters. What is its actual area
- 13. For a classroom, it is planned to use 3DM square bricks to pave the floor, which needs 640 pieces. Now it is planned to use 4dm square bricks to pave the floor. How many pieces do you need? (use proportion solution) In proportion
- 14. The school meeting room is paved with square bricks. 360 square bricks with a side length of 3 DM, and how many square bricks with a side length of 4 DM?
- 15. When the floor area is fixed, the side length of the square brick is not proportional to the number of blocks required? Why?
- 16. Classroom area, brick side length and the number of blocks required out of proportion______ ．
- 17. If a room is paved with 3-decimeter-long square bricks, 96 pieces can be paved. If it is paved with 4-decimeter-long square bricks, how many pieces can be paved? Such as the title
- 18. If a room is paved with 30 cm long square bricks, 800 pieces are needed. If a room is paved with 50 cm long square bricks, how many pieces are needed? (solve by proportion)
- 19. A house needs 350 floor tiles with an area of 6 square decimeters to be paved with floor tiles. If the side length is 3 decimeters, how many floor tiles do you need at least?
- 20. If Mr. Jiang's living room is decorated with 16 square decimeters of square bricks, it will take 150 pieces. Now, how many pieces of square bricks will it take to use 25 square decimeters of square bricks