An isosceles triangle has an area of 20 square meters, a height of 5 meters, a bottom of 5 meters, and a top of several meters?

An isosceles triangle has an area of 20 square meters, a height of 5 meters, a bottom of 5 meters, and a top of several meters?

Isosceles triangle? Bottom?
Is it an isosceles trapezoid?
If it is
So let's set the bottom as X
20=1/2（x+5)*5
x=3

The area of the triangle is 27 square centimeters. The length of the bottom is 45 centimeters. What's the height of the triangle?

A: the height of a triangle is 57 cm

1. The area of a triangle is two seventh of a square centimeter, and the length of its bottom is four fifth of a centimeter. What is the height of a triangle?
2. In calculating a number divided by 3 out of 8, Xiao Mahu regarded it as multiplying 3 out of 8 and got 9 out of 10. What's the correct result of the formula in Xiao Mahu's calculation?

1. The area of a triangle is two seventh of a square centimeter, and the length of its bottom is four fifth of a centimeter. What is the height of a triangle?
Height: 2 / 7X2 △ 4 / 5 = 5 / 28
2. In calculating a number divided by 3 out of 8, Xiao Mahu regarded it as multiplying 3 out of 8 and got 9 out of 10. What's the correct result of the formula in Xiao Mahu's calculation?
The divisor is: 9 / 10 △ 3 / 8 = 6 / 5
Correct result: 6 / 5 △ 3 / 8 = 16 / 5