Solve.The formula for the area of a trapezoid is A = 
h(b1 + b2), where b1 and b2 are the lengths of the two bases and h is the altitude or height of the trapezoid. (i) Solve the formula for h. (ii) The area of a trapezoid is 81 square feet. If its two bases are 6 and 12 feet, find its height.
A. (i) h = 
(ii) 1.5 ft
B. (i) h = 
(ii) 5 ft
C. (i) h = 
(ii) 9 ft
D. (i) h = 
(ii) 18 ft
Answer: C
Mathematics
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A. 8
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A. y = 3
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A. 
+ 
B. 
+ 
C. 
+ 
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+ 
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