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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
AC=4cm
There are two ways
1: If the edge of the square steel sheet is perpendicular to the BC edge, the maximum side length of the square steel sheet is 12 / 7cm
2: If the edge of the square steel sheet is perpendicular to the AB edge, the maximum length of the square steel sheet is 60 / 37cm
12 / 7 > 60 / 37, by comparison, 1 is suitable and less material waste
The side length of an isosceles right triangle is 2.4 cm. How many cm is its area?
Is it right angle side length or oblique side length?
If the right angle side length is 2.4 cm, then the area is 2.4 × 2.4 △ 2 = 2.88 (square centimeter)
If the length of the hypotenuse is 2.4cm, then according to the Pythagorean theorem, we can know: right angle side & # 178; + right angle side & # 178; = hypotenuse side & # 178; = 5.76
Right angle side & # 178; = 2.88
Area = right angle side & # 178; △ 2 = 1.44 (square centimeter)
The waist of an isosceles right triangle is a decimeter, the bottom is B decimeter, its perimeter is () decimeter, and its area is () square decimeter
The waist of an isosceles right triangle is a decimeter, the bottom is B decimeter, its perimeter is (2a + b) decimeter, and its area is (AB √ 2 / 4) square decimeter
The area of an isosceles right triangle is 4.5 square centimeters. Eight such triangles form a square. How many centimeters is the perimeter of the square?
4.5 * 8 = 36 square centimeter
because
36 = 6 * 6
So the side length of a square is 6cm
The girth is:
4 * 6 = 24cm
The area of an isosceles right triangle is 8 square centimeters. A square is made up of 8 such triangles, and its circumference is______ Cm
The square is as follows: the area is 8 × 8 = 64 (square centimeter); the area of a large square is 64 square centimeter, then its side length is 8 centimeter; perimeter: 8 × 4 = 32 (centimeter); answer: its perimeter is 32 centimeter. So the answer is: 32
The area of an isosceles right triangle is a 4.5cm square. Use eight such triangles to form a square. What's the perimeter of the square
√(4.5×8)×4
＝√36×4
＝6×4
＝24
A: the perimeter of this square is 24cm
Two right triangles form a square with a circumference of 25 decimeters. What is the area of each triangle?
(25/4)(25/4)/2=19.53125
A classroom needs to be paved with square bricks. It needs 360 square bricks with an area of 0.16 square meters. If it is used, the side length is 60 cm
360x0.16÷（60x60÷10000）
A classroom needs to be paved with square bricks. It needs 360 square bricks with an area of 0.16 square meters. If it needs to use 60 cm long square bricks, how many?
I am a primary school student, the formula should be simple, no brackets
Classroom area = 0.16x360 = 57.6m2
The area of 60 cm long square brick is 60x60 = 3600 square cm = 0.36 square meter
How many pieces are needed = 57.6 divided by 0.36 = 160 pieces
A classroom needs to be paved with square bricks. It needs 360 square bricks with an area of 0.16 square meters. If we use square bricks with a side length of 60 cm, how many do we need?
hurry up!
0.16 sq m = 1600 sq cm
1600*360÷(60*60)
=576000÷3600
=160 yuan
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