Question

NEED HELP FAST!!!!!!!!!!

Answer 1

h=10m

EXPLANATION

The given formula is

`A = (1)/(2) (b + c)h`

We multiply through by 2 to get,

`2A =(b + c)h`We divide both sides by (b+c) to get,

`(2A)/(b + c)=h`

Or

`h=(2A)/(b + c)`

`h=(2 * 135)/(20 + 7)`

We simplify to get,

`h=(270)/(27)`

Therefore

`h = 10`

Now if b=20, c=7 and A=135, then,

Answer 2

h = 10 m

Explanation:

We are given the following formula of the area of a trapezoid:

`A=(1)/(2) (b+c)h`

where
`h` is the height of the trapezoid and
`b` and
`c` are its bases.

Re-arranging the given formula to solve for h:

`A=(1)/(2) (b+c)h`

`2A=(b+c)h`

`h=(2A)/((b+c))`

Finding the height of the trapezoid given the bases 20 m, 7 m and area 135m^2.

`h=(2 * 135)/((7+20))`

h = 10 m