1951 AHSME Problems/Problem 4: Difference between revisions
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The walls are <math>13*5=65</math> and <math>10*5=50</math> in area, and the ceiling has an area of <math>10*13=130</math>. | The walls are <math>13*5=65</math> and <math>10*5=50</math> in area, and the ceiling has an area of <math>10*13=130</math>. | ||
<math>((65+50)2)2+130=590 \Rightarrow \boxed{\mathrm{(D) | <math>((65+50)2)2+130=590 \Rightarrow \boxed{\mathrm{(D)}}</math> | ||
==See also== | ==See also== | ||
Revision as of 09:01, 5 February 2008
Problem
A barn with a roof is rectangular in shape, 
yd. wide, 
yd. long and 
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:
Solution
The walls are 
and 
in area, and the ceiling has an area of 
.
