the dimensions of a cuboid are in the ratio 7 ratio 3 ratio 3 and its total surface area is 2015 square meter find its dimension
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Let the side be -a ,2a,3a
so TSA =2(lb+bh+lh)
88 =2(a×2a+2a×3a+a×3a)
88/2=2(2a×a+6a×a+3a×a)
44=11a×a
44/11=a×a
2×2=a×a
a = 2
so side are -2,4,6
so TSA =2(lb+bh+lh)
88 =2(a×2a+2a×3a+a×3a)
88/2=2(2a×a+6a×a+3a×a)
44=11a×a
44/11=a×a
2×2=a×a
a = 2
so side are -2,4,6
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