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Find the area and perimeter of a rectangle whose breadth is 4 cm and the height 3 cm.
a)
16cm2, 11cmb)
12cm2, 14cmc)
9cm2, 18cmd)
16cm2 ,16cmCorrect answer is option 'B'. Can you explain this answer?
Verified Answer
Find the area and perimeter of a rectangle whose breadth is 4 cm and t...
Area = b×h = 4×3 = 12 cm2.
Perimeter = 2(b) + 2(h) = 2(4) + 2(3) = 8 + 6 = 14 cm
Perimeter = 2(b) + 2(h) = 2(4) + 2(3) = 8 + 6 = 14 cm
This question is part of UPSC exam. View all Class 7 courses
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Find the area and perimeter of a rectangle whose breadth is 4 cm and t...
Solution:
Finding the area of the rectangle:
- The formula to find the area of a rectangle is A = l x b, where A is the area, l is the length, and b is the breadth.
- In this case, the breadth is given as 4 cm and the height as 3 cm.
- Therefore, the area of the rectangle is A = 4 cm x 3 cm = 12 cm2.
Finding the perimeter of the rectangle:
- The formula to find the perimeter of a rectangle is P = 2(l + b), where P is the perimeter, l is the length, and b is the breadth.
- In this case, the breadth is given as 4 cm and the height as 3 cm.
- Therefore, the perimeter of the rectangle is P = 2(3 cm + 4 cm) = 2 x 7 cm = 14 cm.
Therefore, the correct option is (b) 12cm2, 14cm as it matches the calculated area and perimeter of the rectangle.
Finding the area of the rectangle:
- The formula to find the area of a rectangle is A = l x b, where A is the area, l is the length, and b is the breadth.
- In this case, the breadth is given as 4 cm and the height as 3 cm.
- Therefore, the area of the rectangle is A = 4 cm x 3 cm = 12 cm2.
Finding the perimeter of the rectangle:
- The formula to find the perimeter of a rectangle is P = 2(l + b), where P is the perimeter, l is the length, and b is the breadth.
- In this case, the breadth is given as 4 cm and the height as 3 cm.
- Therefore, the perimeter of the rectangle is P = 2(3 cm + 4 cm) = 2 x 7 cm = 14 cm.
Therefore, the correct option is (b) 12cm2, 14cm as it matches the calculated area and perimeter of the rectangle.
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Find the area and perimeter of a rectangle whose breadth is 4 cm and the height 3 cm.a)16cm2,11cmb)12cm2, 14cmc)9cm2, 18cmd)16cm2,16cmCorrect answer is option 'B'. Can you explain this answer?
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