the surface area of cuboid is 1372cm find length if dimensions are in the ratio 4:2:1
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lenght =196cm;breath=98cm and length =49cm
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Surface area of cuboid=2(lb+bh+hl)
l=4x
b=2x
h=1x
1372=2(8x²+2x²+4x²)
1372÷2=14x²
686=14x²
686/14=x²
49=x²
√49=x
7=x
Then length=4x==>4×7==>28cm
breadth=2x=>2×7==>14cm
height=1x==>1×7==>7cm
l=4x
b=2x
h=1x
1372=2(8x²+2x²+4x²)
1372÷2=14x²
686=14x²
686/14=x²
49=x²
√49=x
7=x
Then length=4x==>4×7==>28cm
breadth=2x=>2×7==>14cm
height=1x==>1×7==>7cm
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