Question

A Rectangular Cardboard of Dimensions 20 m × 10 m is placed on a Table. 4 Squares of Side 2.5 m are cut out from the Corners and the 4 Sides are Folded. Find the Surface Area of the resulting Figure which is to be painted on all the Sides.

a. 175 sq. metres
b. 155 sq. metres
c. 180 sq. metres
d. 100 sq. metres​

Answer 1

Answer:

a.175 sq metres

area of rectangular cardboard=20*10 sq metres

=200 sq metres

areas of 4 squares= 4*(2.5)^2

=4*6.25

=25 sq metres

area of remaining parts=(200-25)sq metres

=175 sq metres