Question

1. Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and
width
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Answer 1

Answer:

Perimeter of the rectangle is 40 cm. Find its length and width. Sol. Let width of rectangle (b) = x cm Then, length of rectangle (1) = 3x cm As we know, Perimeter of rectangle = 2(1 + b) 40 = 2 (3x + x) 8x = 40 40 - 5cm Hence, the length is 15 cm and the width is 5 cm muda in front of Meena's.

Answer 2

Answer:

Step-by-step explanation:Let l and b be the length and breadth of rectangle

Given that, l=3b

We know that,

Perimeter of the rectangle =2×(l+b)

⇒40 cm=2×(3b+b)=2×4 b=8 b

⇒b=

8

40

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cm=5 cm

⇒l=3b=3×5 cm=15 cm.

Hence, the length and width of the rectangle are 15 cm and 5 cm% respectively.