A cuboid’s length is 4 cm and breadth is 3 cm. Find its height if its surface area is 38 cm^2.
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Answer:Surface area of cuboid =2(lb+bh+lh)=52cm2
2(4×3+3×h+4×h)=52cm2
2(12+3h+4h)=52cm2
2(12+7h)=52cm2
12+7h=26cm2
7h=14
h=2cm
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