Question

3. An aquarium is in the form of a cuboid whose external measures are 70 cm x 28 cm x
35 cm. The base, side faces and back face are to be covered with coloured paper. Find the area of the
paper
needed.
​

Answer 1

Answer:

Given length = 70cm

         breadth = 28 cm

         height = 35 cm.

Area of base = l * b =  70 * 28 = 1960

Area of side base = b * h =  28 * 35 = 980

Area of back face = l * h = 70 * 35 = 2450.

Area of the paper needed = 1960 + 2450 + 2(980)

                                           = 1960 + 2450 + 1960

                                           = 6370 cm^2.

Hope this helps!