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प्रश्न
Match the following:
| Shapes | Perimeter |
(A)  |
(i) 10 |
(B)  |
(ii) 18 |
(C)  |
(iii) 20 |
(D)  |
(iv) 25 |
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उत्तर
| Shapes | Perimeter |
| (A) |
(iii) 20 |
| (B) |
(iii) 20 |
| (C) |
(ii) 18 |
| (D) |
(i) 10 |
Explanation:
(A) We know that,
Perimeter of a rectangle = 2 × (Length + Breadth)
Here, length = 6 and breadth = 4
∴ Perimeter of a rectangle = 2 × (6 + 4)
= 2 × 10
= 20
(B) Here, side = 5
∴ Perimeter of a square = 4 × Side ...[∵ In square all sides are equal]
= 4 × 5
= 20
(C) Here, side = 6
∴ Perimeter of an equilateral triangle = 3 × Length of a side
= 3 × 6
= 18
(D) Given sides are 4, 4 and 2.
∴ Perimeter of an isosceles triangle = Sum of all sides
= 4 + 4 + 2
= 10
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