Question

Use the Pythagorean Theorem (a? + b2 = (?) to find the missing side length. Round to the nearest tenth.

Answer 1

Answer: 3.9 (choice A)

==============================================

Work Shown:

• a = 1
• b = unknown
• c = 4

Apply the pythagorean theorem to get

a^2+b^2 = c^2

1^2+b^2 = 4^2

1+b^2 = 16

b^2 = 16-1

b^2 = 15

b = sqrt(15)

b = 3.87298

b = 3.9