Question

Use the Pythagorean Theorem to find the missing side of the triangle. Round to the nearest tenth, if necessary.

a = ?, b = 5, c = 8
A. 6.0
B. 6.1
C. 6.2
D. 6.3

Answer 1

The Pythagorean Thm says that A^2 + B^2 = C^2. So we have:
A^2 + 5^2 = 8^2 which is:
A^2 + 25 = 64
A^2 = 39
A = sqrt(39)