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The area of an isosceles trapezoid is known to be 6.18.10 for the upper, lower, and waist
H 2 = 10 2 - [(18-6) / 2] 2 = 64
Height = 8
Area = 8 * (6 + 18) / 2 = 96
If the length of the upper bottom is 2, the length of the lower bottom is 10, and the height is 3, the waist length of the isosceles trapezoid is 3
The waist length is 5
It is known that one base angle of isosceles trapezoid is 60 ° and its two bases are 16 and 30 respectively They say the answer is 14
((30-16)/2)*2
=14
If the difference between the two bases of an isosceles trapezoid is equal to one waist length, the angle between its waist and the bottom is 60 degrees. Why? I see a way to make the height of CD, AE is perpendicular to CD and E, and then be = 1 / 2 AC, so ∠ CAE is equal to 30 ° and the remaining ∠ is 60 ° why ∠ ace is equal to 30?
In a right triangle, if the opposite side of an acute angle is equal to half of the hypotenuse, the angle is equal to 30 degrees
The circumference of an isosceles trapezoid is 30 cm. The waist and height are 5 cm and 3.6 cm respectively. Find out the area of this trapezoid
The area formula of trapezoid is: (bottom + bottom) × height △ 2
Top bottom + bottom bottom = 30-5-5 = 20cm
Area s = 20 × 3.6 △ 2 = 36cm
There is an isosceles trapezoid with a circumference of 30 cm, waist and height of 5 cm and 3.63 cm respectively. Find out the area of this trapezoid
Area = ((top bottom + bottom) * height) / 2
=(30-5*2)*3.63/2
=36.3
An isosceles trapezoid with a circumference of 30cm, a waist of 7cm in length and 5cm in height. The area of this trapezoid is ()
(30-7 × 2) × 5 △ 2 = 40 (square centimeter)
The circumference of an isosceles trapezoid is 26 cm, the waist length is 5 cm, and the height is 4 cm. What is the area of this isosceles trapezoid?
Because the circumference of the isosceles trapezoid is 26 cm and the waist length is 5 cm, the sum of the upper and lower bases is 16 cm,
So isosceles trapezoid area = (upper bottom + bottom) × height △ 2 = 32 square centimeter
The circumference of a right angled trapezoid is 48 cm. The ratio of the sum of the two bottoms to the sum of the two waists is 2; 1. The ratio of one waist to the other is 3; 5. Find the area of the trapezoid
2 + 1 = the number of shares divided into 3 circumference
48 × 2 / 3 = 32 cm sum of two bottoms
48 × 1 / 3 = 16 cm sum of two waist
16 × 3 / (3 + 5) = 6 cm trapezoid height
32 × 6 △ 2 = 96 square centimeter trapezoid area
The circumference of a right angled trapezoid is 96cm. The ratio of the sum of two bottoms to the sum of two waists is 3:5. If one is 2 / 3 of the other waist, the area of this trapezoid is What's the square centimeter?
96*(5/8)=60
The sum of the two bottoms = 96-60 = 36
Right angle waist 60 * (2 / 5) = 24
Area = 36 * 24 / 2 = 432
RELATED INFORMATIONS
- 1. The circumference of the right angle trapezoid is 48 cm. The ratio of the sum of the two bottoms to the sum of the two waist is 2:1, and the ratio of one waist to the other is 3:5
- 2. It is known that the length of the upper and lower bottom of isosceles trapezoid is root 3 and root 12 respectively, and the height is root 6
- 3. The length of the trapezoid is 5, the length of the bottom is 10, and the length of the waist is 3 and 4 respectively A. 18 B. 22.5 C. 26.25 D. 30
- 4. The circumference of an isosceles trapezoid is 80 cm. The upper and lower heights are 20 cm and 30 cm respectively. How many centimeters is the waist length of this isosceles trapezoid?
- 5. A piece of wire is surrounded by a square with an edge length of 8 cm. If it is surrounded by a rectangle with a length of 12 cm, what is the width of the rectangle?
- 6. How can a right angled trapezoid be divided into four figures of equal size and same shape
- 7. In the RT triangle ABC, ∠ C = 90 ° a - ∠ B = 22 ° to find the degree of ∠ a ∠ B
- 8. Pythagorean theorem in RT △ ABC ∠ C = 90 ° given a = 300, B = 400, then C =?
- 9. In the RT triangle ABC, ∠ C = 90 °. (1) given a = b = 5, find C; (2) known a = 1, C = 2, find B; (3) known C = 17, B = 8, find a; (4)
- 10. Is there an acute angle A and B such that a + 2B = 2-sect / 3 and Tan (A / 2) * tanb = 2-radical 3 hold simultaneously Find a, b value
- 11. Isosceles trapezoid's upper, lower bottom and waist length are 4cm, 10cm, 6cm respectively. How many upper and lower corners should be reminded
- 12. The cosine value of an isosceles triangle is root 2 / 2, waist length is 3, root 2. Find the area of this isosceles triangle
- 13. If the waist length of an isosceles triangle is 10 and its area is 30, then the tangent of the base angle of the isosceles triangle is________
- 14. How to make a 40 degree angle with a pair of triangular rulers
- 15. As shown in the figure, ⊙ o is the circumscribed circle of ⊙ ABC, ﹤ BAC = 55 ° and the degree of ﹤ OBC is () A. 25° B. 35° C. 55° D. 70°
- 16. As shown in the figure, the four points a, B, C, D are on the circle O. if an external angle DCE of the quadrilateral ABCD is 70 °, calculate the size of the angle bad and the angle BOD
- 17. The triangle ABC is an equilateral triangle, O is a point in the triangle ABC, OA = 5. Ob = 4. OC = 3. Find the degree of angle BOC
- 18. If the length of an arc is equal to one-third of the radius, the angle of the center of the arc is
- 19. If the radius of the circle becomes 3 times of the original one, and the arc length remains unchanged, the angle of the arc to the center of the circle is several times that of the original arc
- 20. As shown in the figure, three straight lines AB, CD and EF intersect at the same point O, if ∠ AOE = 2 ∠ AOC, ∠ COF = 3 2 ∠ AOE, then ∠ doe=______ .