Question

I need help with the third part of number 2 please!

Answer 1

Answer: 21.8

Explanation:

Pythagorean Theorem = a^2 + b^2 = c^2

5^2 + b^2 = 10^2

25 + b^2 = 100

b^2 = 75

b = 8.7

area = 1/2bh

1/2 5x8.7

1/2 43.5

21.8