Question

Find the height of a cuboid whose perimeter of the base is 550 2 and lateral surface area is
2750 2.

Answer 1

Area of the sheet required for making the box open at the top = 2(bh+ h1)+ lb

= 2 (1.25 × 0.65 + 0.65 × 1.5) + 1.5 × 1.25

= 2 (0.8125 + 0.975) + 1.875

= 2 × 1.7875 + 1.875

= 3.575 + 1.875

= 5.45 m2