Question

HELP ME PLS!!!!!111

a = 6 cm, b = 9 cm, and c = 3 cm

Answer 1

Answer:

Option B, 72 cm^2

Step-by-step explanation:

The formula for the area of a trapezoid is $\frac{a+b}{2}h$, where a and b represent the two base lengths and h represents the height. In this case, the two base lengths are 9 and (9+3+3)=15. Plugging this into the equation, you get $\frac{9+15}{2}\cdot6=12\cdot6=72$, or option B. Hope this helps!

Answer 2

Answer:

b + c

Step-by-step explanation:

The given figure is a trapezoid of width a.  Its two leg lengths are b and b + 2c.  Then using the formula for the area of a trapezoid, we get:

       b + b + 2c              2b + 2c

A = ----------------- * a  =  ------------- = b + c

               2                           2