8. A cuboid of dimensions 10 em by 2 cm by 2 cm is divided into 5 cube

1.	8. A cuboid of dimensions 10 em by 2 cm by 2 cm is divided into 5 cubes of edge 2 cm. Find the ratiothe total surface area of the cuboid and that of the cubes.
Answer» For cuboid=l=10cmb=2 cmh=2 cm For cube=side=2cm Therefore, Total surface area of cube _______________________Total surface area of cuboid = 6×(side)^2 ____________ 2(l×b+b×h+h×l) = [6×(2)^2]---(reason=there are 5 cubes__________ 2×(10×2+2×2+2×10) =[6×4]5_________ 2×44 =24×5 ________ 88 =120_________ 88 =15______ 11 =15:11

8. A cuboid of dimensions 10 em by 2 cm by 2 cm is divided into 5 cubes of edge 2 cm. Find the ratiothe total surface area of the cuboid and that of the cubes.

Answer»

For cuboid=l=10cmb=2 cmh=2 cm

For cube=side=2cm

Therefore,

Total surface area of cube _______________________Total surface area of cuboid

= 6×(side)^2 ____________ 2(l×b+b×h+h×l)

= [6×(2)^2]---(reason=there are 5 cubes__________ 2×(10×2+2×2+2×10)

=[6×4]5_________ 2×44

=24×5 ________ 88

=120_________ 88

=15______ 11

=15:11