Question

Someone pleeeeease help me

Answer 1

22.4cm

Explanation:

The formula for the diagonal is:

`d = \sqrt{l^(2) + b^(2) +h {}^(2) }`

Where:

l is the length (AB, CD)

b is the width (BC, AD)

h is the height (AE, BF, CG, DH)

We know d, l, b and we can calculate h

`25 = \sqrt{10^(2) + 8^(2) + h^(2) }`

We evaluate both sides to ² to remove the square root:

`25^(2) = 100 + 64 + h {}^(2)`

`625 = 164 + h {}^(2)`

To find the value of h we have to do the square root, as it is to the ²:

`√(625 - 124) = h`

`√(501) = h = 22.4cm`