Question

Suppose a bay window is a perfect semicircle with an area of 4.5 square feet. If the architect wants to use a scale of 0.5 inch = 1 ft on the floor plan, what is the radius of the bay window on the floor plan?

A) 0.85 inches
B) 1.7 inches
C) 3 inches
D) 3.4 inches

Answer 1

The answer is A) .85 inches

Explanation:

A =

1 /2 πr2 4.5 = 1 2 πr2 1.6926 = r

thus, 0.50 in

1 ft = x in 1.6926 ft x = 0.8463