Question

Please help! Thanks :DD

Answer 1

Answer:

A. 58 square cm

Step-by-step explanation:

From the composite figure,

A1 = $\frac{1}{2}$ x base x height

   = $\frac{1}{2}$ x 2 x 3

   = 3 $cm^{2}$

A2 = length x width

     = 8 x 2

     = 16 $cm^{2}$

A3 = $\frac{1}{2}$ (a + b) h + $\frac{1}{2}$ x base x height

    = $\frac{1}{2}$ (10 + 12) 3 + $\frac{1}{2}$ x 2 x 3

    = $\frac{1}{2}$ (22) 3 + 3

    = 11 x 3 + 3

A3 = 33 + 3

     = 36 $cm^{2}$

Total area = A1 + A2 + A3

                 = 3 + 16 + 36

                 = 58 $cm^{2}$