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Question 1. The side of a cube is 4 cm long. Find its volume.
  1.    64 cm3
  2.    16 cm3
  3.    32 cm3
  4.    64 cm3
Answer: Option D
: D

Given: Length of each side = 4 cm
Volume of a cube = Side3
= (4cm)3
= 64cm3
Therefore, volume of the given cube is 64cm3.

Question 2. If the perimeter of a square is 16 cm, then its area is:
  1.    4 cm2
  2.    8 cm2
  3.    16 cm2
  4.    32 cm2
Answer: Option C
: C

Given: Perimeter= 16 cm
Perimter of a square = 4 ×Side
16 cm = 4 ×Side
Side =164=4cm

Area of a square = Side × Side
Area of the square =4cm×4cm=16cm2

Question 3. Length and breadth of a rectangle are 10 cm and 5 cm. Find its area.
  1.    15 cm
  2.    15 cm2
  3.    2 cm
  4.    50 cm2
Answer: Option D
: D

Given: Length of the rectangle = 10 cm
Breadth of the rectangle = 5 cm
Area of a rectangle = Length × Breadth
= 10cm×5cm
= 50cm2
Therefore, area of the given rectangle is50cm2.