The sum of length ,breadth and height of a cuboid is 25 CM and the length of its diagonal is 15 CM. find the surface area of cuboid
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the surface of Cuboid is 375 .I think
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L+B+H = 25 cm
Diagonal = 15
√(L²+B²+H²) = 15
L²+B²+H² = 15²
(L+B+H)²-2(LB+BH+HL) = 225
25²-225 = 2(LB+BH+HL)
625-225 = Surface area of cuboid
Surface area = 400cm²
Diagonal = 15
√(L²+B²+H²) = 15
L²+B²+H² = 15²
(L+B+H)²-2(LB+BH+HL) = 225
25²-225 = 2(LB+BH+HL)
625-225 = Surface area of cuboid
Surface area = 400cm²
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