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Q.

The surface area of a cuboid is 758 sq.cm. Its length and height are 14 cm and 11 cm respectively. Then its breadth is ____.


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Detailed Solution

The surface area of a cuboid is 758 sq.cm. Its length and height are 14 cm and 11 cm respectively. Then its breadth is 9 cm.
Given, the surface area of a cuboid is 758 sq.cm. Its length and height are 14 cm and 11 cm respectively.
We know that the surface area of a cuboid is 2(lb+bh+lh)=758.
2((14)(11)+11b+14b)=758
25b=379-154
25b = 225
b=22525=9 cm
So, the width is 9 cm.
Hence, the correct answer is 9 cm.
 
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