Question

10. The expression a(b + c) can be used to

find the area of the trapezoid. What is the
area of the trapezoid when a = 5.5, b = 5,
and c = 7.2? (Example 4)
1 bm
(ас)
So
am
cm

Answer 1

firstly the formula is wrong

it is (a(b+c))/2

substitute:

(5.5(5+7.2))/2

(5.5 * 12.2)/2

33.5