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All questions of Perimeter of Various Shapes & Area of Rectangle and Square for Class 5 Exam

The perimeter of a square is 20 cm. What is the length of each side of the square?
  • a)
    80 cm
  • b)
    18 cm
  • c)
    5 cm
  • d)
    4 cm 
Correct answer is option 'C'. Can you explain this answer?

Gunjan Lakhani answered
To find the length of each side of the square:
  • The perimeter of a square is calculated using the formula: Perimeter = 4 × side length.
  • Given that the perimeter is 20 cm, set up the equation:
  • 4 × side length = 20 cm
  • To find the side length, divide both sides by 4:
  • side length = 20 cm / 4
  • Thus, the length of each side is 5 cm.

A square has an area of 64 cm2. What is the length of each side?
  • a)
    8 cm
  • b)
    16 cm
  • c)
    32 cm
  • d)
    60 cm 
Correct answer is option 'A'. Can you explain this answer?

The area of a square is given by the formula A = s^2, where A is the area and s is the length of each side. We are given that the area of the square is 64 cm^2, so we can set up the equation 64 = s^2. Solving for s, we get s = 8 cm. Therefore, the length of each side of the square is 8 cm.

The area of the figure above is _____ 
m2.
  • a)
    42
  • b)
    88 
  • c)
    108
  • d)
    123 
Correct answer is option 'B'. Can you explain this answer?

first break it into a rectangle and square

rectangle of LxB=9x7
square of side=5
so area of rectangle = 9x7 =63
area of square = 5x5 = 25
so total  area = 63 +25
                      = 88

Which one of the following rectangles had the biggest perimeter?
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'B'. Can you explain this answer?

Saikat Chavan answered
A) Area = 96m2
Breadth = 8m
Area = l*b
96 = l*8
l =12
Perimeter = 2(l+b)
= 2(12+8) = 40
 
B) Area = 110m2
Breadth = 10cm = 0.1m
Area = l*b
110 = l*0.1
l =1100
Perimeter = 2(l+b)
= 2(1100+0.1) = 2200.2
 
C) Area = 90m2
Length = 15cm = 0.15m
Area = l*b
90 = 0.15*b
b = 600m
Perimeter = 2(l+b)
= 2(0.15+600) = 1200.3
 
D) Area = 100m2
Length = 25cm = 0.25m
Area = l*b
100 = 0.25*b
b = 400m
Perimeter = 2(l+b)
= 2(0.25+400) = 800.5

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