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Standard VIII

Mathematics

Perimeter of Square and Rectangle

Question 112 ...

Question

Question 112 (iii)

Use the following figure, showing the layout of a farmhouse.

A fence is to be enclosed around the house. The dimensions of house are $18.7 m \times 12.6 m$ . At least how many metres of fencing are needed?

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Solution

Since, fence to be enclosed around the house of dimensions $18.7 m \times 12.6 m$
$∵$ Perimeter of the house $= 2 \times (l + b)$
$∴$ Total length of fence $= 2 \times (18.7 + 12.6) m = 2 \times 31.3 m = 62.6 m$

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Perimeter of Square and Rectangle

Standard VIII Mathematics

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Question 112 (iii) Use the following figure, showing the layout of a farmhouse. A fence is to be enclosed around the house. The dimensions of house are 18.7m×12.6m. At least how many metres of fencing are needed?

Since, fence to be enclosed around the house of dimensions 18.7 m×12.6 m ∵ Perimeter of the house =2×(l+b) ∴ Total length of fence =2×(18.7+12.6) m=2×31.3 m=62.6 m

Question 112 (iii)

Use the following figure, showing the layout of a farmhouse.

A fence is to be enclosed around the house. The dimensions of house are $18.7 m \times 12.6 m$ . At least how many metres of fencing are needed?

Since, fence to be enclosed around the house of dimensions $18.7 m \times 12.6 m$
$∵$ Perimeter of the house $= 2 \times (l + b)$
$∴$ Total length of fence $= 2 \times (18.7 + 12.6) m = 2 \times 31.3 m = 62.6 m$