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1951 AHSME Problems/Problem 4

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Problem

A barn with a roof is rectangular in shape, 10 yd. wide, 13 yd. long and 5 yd. high. It is to be painted inside and outside, and on the ceiling, but not on the roof or floor. The total number of sq. yd. to be painted is:

\mathrm{(A) \ } 360 \qquad \mathrm{(B) \ } 460 \qquad \mathrm{(C) \ } 490 \qquad \mathrm{(D) \ } 590 \qquad \mathrm{(E) \ } 7...

Solution

The walls are 13*5=65 and 10*5=50 in area, and the ceiling has an area of 10*13=130.

((65+50)2)2+130=590 \Rightarrow \boxed{\mathrm{(D)}}

See also

1951 AHSME (Problems)
Preceded by
Problem 3
Followed by
Problem 5
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