Question

Write an equation that can be used to answer the questions. Then solve. Round to the nearest tenth if necessary.

How tall is the building?

Answer 1

17.3 ft

Explanation:

We can use the Pythagorean theorem to solve

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

10^2 + h^2 = 20^2

100 + h^2 =400

Subtract 100 from each side

h^2 = 400-100

h^2 = 300

Taking the square root of each side

sqrt(h^2) = sqrt(300)

h = 17.32050808

Rounding to the nearest tenth

h = 17.3 ft