Question

Please help me with this

Answer 1

According to lots of Pythagorean theorem,

h=7

I really don’t want to show my work because it took a while to solve this lol but if you want me to show my work just comment

Answer 2

8 ft

Explanation:

The area (A) of a triangle =
`(1)/(2)` bh

where b is the base and h the perpendicular height

Using b = 20 and h = 12, then

A = 0.5 × 20 × 12 = 120 ft²

Using b = 30 and perpendicular height = h, then

0.5 × 30 × h = 120

15h = 120 ( divide both sides by 15

h = 8