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An A-frame cabin has a triangular front with a base of 30 ft and a height of 20 ft. If the front is to be glass that costs $3 p...Asked by Jessica
An A frame cabin has a triangler front with a base of 30ft and a height of 20ft. If the front is to be glass that costs $3 per square foot, what will the glass cost?
Answers
Answered by
Ms. Sue
To find the area of a triangle, use this formula:
A = 1/2*b*h
A = 1/2 * 30 * 20
A = 300 sq. feet
300 * $30 = ?
A = 1/2*b*h
A = 1/2 * 30 * 20
A = 300 sq. feet
300 * $30 = ?
Answered by
ali
a=b*h/2
a=30*20/2
a=60/2
a=30sq ft
30*3=90
the glass will cost?
a=30*20/2
a=60/2
a=30sq ft
30*3=90
the glass will cost?
Answered by
Ms. Sue
Ali -- how did you get 60 for the product of 30 * 20?
When I went to school 3 * 20 was 60.
When I went to school 3 * 20 was 60.
Answered by
Reiny
Actually, you both made errors,
cost = (1/2)(30)(20)($3) =
= 300($3) = $900
cost = (1/2)(30)(20)($3) =
= 300($3) = $900
Answered by
Ms. Sue
Ooops. Thanks Reiny. I thought $9,000 seemed pretty steep.
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