Question

the perimeter of the base of a cuboid is 14cm and it's lateral surface area is 231cm square find its height​

Answer 1

For the cuboid with length l, breadth b and height h;

perimeter of the base = 14 cm

2(l + b) = 14 ... (i)

lateral surface area = 231 cm²

2(bh + lh) = 231

2h(l + b) = 231

h [2(l + b)] = 231

h (14) = 231

h = 231/14 cm