Question

Please please help me

Answer 1

Answer:

B. 143.4 $\text{mi} ^2$

Step-by-step explanation:

In simple terms, surface area =  adding area of all surfaces

This figure has 6 sides.

Surface area = 2 * area of trapezium + 2* area rectangle + area of bottom rectangle + area top rectangle

Surface area = 2 * ($(\frac{a+b}{2}) * h + 2* (l*w) + l*w + l*w$)

= $2 * (\frac{3+6}{2} * 2.6) + 2* (8*3) + 3*8 + 8*6$

= $2 * 11.7 + 2* 24 + 24 + 48$

= 143.4 $\text{mi}^{2}$

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