Question

The total surface of a cuboid with square base is 169meter square and it's lateral surface area is 144

Answer 1

Answer:

T.S.A OF CUBOID =  169

C.S.A OF CUBIOD = 144

==> 2(L+B)H = 144

==> LB+BH = 72

==> TSA = 2(LB+BH+HL) = 169

==>  (72+HL) = 169/2

==>  HL = 84.5 - 72

==> HL = 12.5

2(L+B)H = 144

==> 2(LH+BH) = 144

==> 12.5+BH = 72

==>BH = 72-12.5

==> BH = 59.5

T.S.A = 2(LB+BH+HL) = 169

==> 2(LB+59.5+12.5) = 169

==> 2(LB+ 72) = 169

==> LB+72 = 84.5

==> LB = 84.5-72

==> LB =  12.5