Question

(05.02)On a boat, a cabin's window is in the shape of an isosceles trapezoid, as shown below. What is the area of the window?

Answer 1

Answer:

195 square inches

Step-by-step explanation:

The formula for the area of a trapezoid is given by the formula

A = 1/2(b₁+b₂)h

We have b₁ and h.  We must find b₂.

Since this trapezoid is isosceles, the base of the triangle on the right will be the same as the base of the triangle on the left; this means we have 3+3 = 6 extra from the top base, which gives us b₂ = 10+6 = 16:

A = 1/2(10+16)(15) = 1/2(26)(15) = 13(15) = 195

Answer 2

390 square inches or 140 square inches