1. To solve this problem, you must apply the formula for calculate the area of the trapezoid, which is:
A=(B+b)h/2
A is the area of the trapezoid (A=69.6 in²). (B+b) is the sum of the bases of the trapezoid. h is the height of the trapezoid (h=8.7 in).
2. When you clear the sum of the bases (B+b), you have:
A=(B+b)h/2 2A=<span>(B+b)h </span><span> (B+b)=2A/h </span> (B+b)=2(69.6 in²)/(8.7 in) (B+b)=16 in
3. The problem says that <span>the sum of its legs is equal to the sum of its bases, therefore, the perimeter is: </span> Sum of the legs=Sum of the bases (B+b)=16 in
