The ratio between length, breadth and height of a rectangular block is 3:
2:1 and its total surface area is 352 cm². Find the length of block ?
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Answer:
According to ratio
length=3x
breadth=2x
height=x
TSA of cuboid= 2(lb+bh+hl)
352=2(6x²+2x²+3x²)
176=11x²
x²=16
x=4
length=3×4=12cm
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