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the length breadth and height of a cuboid are int he ratio 10:6:5 its total surface area is 1120sqcm find the area of its vertical faces |
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Answer» Answer: let ratios be 10x,6x and 5x surface area of cuboid is 2( lb+bh+hl) Step-by-step explanation: THEREFORE, 2(60xsq.+30xsq.+50xsq.)=1120cm sq 2(140xsq.)=1120cm sq. 280 x sq. =1120cm sq. x sq.=1120/280 sq. x sq.=4 cm sq. by CANCELLING the squares, x=4cm therefore, 10x =40cm,6x=60cm,5x=50cm |
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