1 Answer

Jackson Egan · Answer 1 · 2018-04-06T09:48:30+0000

Data:

b1 = 5 km

b2 = 7 km

h = 3 km

Formula: area = (1/2) h * (b1 + b2)

Solution: just replace the values of b1, b2 and h in the formula and make the calculations:

area = (1/2) 3km ( 5km + 7km) = (1/2) 3 km * 12 km = 18 km^2

Answer: option B. 18

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