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Mensuration | Mensuration Exercise 20.2

Question 17

A rectangular piece of land measure 0.7 km by 0.5 km. Each side is to be fenced with four rows ofwires. What length of the wire is needed?

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It is given that

Measure of rectangular piece of land = 0.7 km × 0.5 km

We know that

Perimeter = 2 (L + B)

By substituting the values

Perimeter = 2 (0.7 + 0.5) = 2 × 1.2 = 2.4 km

The above obtained perimeter = one row of wire needed to fence the rectangular piece of land

So the length of wire needed to fence the land with 4 rows of wire = 4 × 2.4 = 9.6 km

Hence, the length of wire needed is 9.6 km.

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Our top 5% students will be awarded a special scholarship to Lido.

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Question 17

A rectangular piece of land measure 0.7 km by 0.5 km. Each side is to be fenced with four rows ofwires. What length of the wire is needed?

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

It is given that

Measure of rectangular piece of land = 0.7 km × 0.5 km

We know that

Perimeter = 2 (L + B)

By substituting the values

Perimeter = 2 (0.7 + 0.5) = 2 × 1.2 = 2.4 km

The above obtained perimeter = one row of wire needed to fence the rectangular piece of land

So the length of wire needed to fence the land with 4 rows of wire = 4 × 2.4 = 9.6 km

Hence, the length of wire needed is 9.6 km.

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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