There are two lawns in the shape of a rectangle- Find the perimeter of the lawns if its lengths and breadths are given as follows-i- 1-10 cm - b -8 cmii- l -18 cm - b -12 cmwhere l- length and b- breadthA- i- 30 cm- ii- 40 cmB- i- 36 cm- ii- 60 cmC- i- 40 cm- ii- 56 cmD- i- 34 cm- ii- 64 cm

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Perimeter of Rectangle

There are two...

Question

There are two lawns in the shape of a rectangle. Find the perimeter of the lawns if its lengths and breadths are given as follows:
i. l = 10 cm, b = 8 cm
ii. l = 18 cm, b = 12 cm
where l = length and b = breadth

i. 30 cm, ii. 40 cm

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i. 36 cm, ii. 60 cm

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i. 40 cm, ii. 56 cm

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i. 34 cm, ii. 64 cm

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Solution

The correct option is B
i. 36 cm, ii. 60 cm

The general algebraic formula for perimeter of rectangle = 2(l + b)
For (i)
l = 10 cm, b = 8 cm
Perimeter = 2(l + b)
= 2(10 + 8)
= 2 $\times$ 18
= 36 cm.
For (ii)
l =18 cm, b = 12 cm
Perimeter = 2(l + b)
= 2(18 +12)
= 2 $\times$ 30
= 60 cm.

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There are two lawns in the shape of a rectangle. Find the perimeter of the lawns if its lengths and breadths are given as follows: i. l = 10 cm, b = 8 cm ii. l = 18 cm, b = 12 cm where l = length and b = breadth

The correct option is B i. 36 cm, ii. 60 cm The general algebraic formula for perimeter of rectangle = 2(l + b) For (i) l = 10 cm, b = 8 cm Perimeter = 2(l + b) = 2(10 + 8) = 2 × 18 = 36 cm. For (ii) l =18 cm, b = 12 cm ​ Perimeter = 2(l + b) = 2(18 +12) = 2 × 30 = 60 cm.

There are two lawns in the shape of a rectangle. Find the perimeter of the lawns if its lengths and breadths are given as follows:
i. l = 10 cm, b = 8 cm
ii. l = 18 cm, b = 12 cm
where l = length and b = breadth

The correct option is B
i. 36 cm, ii. 60 cm

The general algebraic formula for perimeter of rectangle = 2(l + b)
For (i)
l = 10 cm, b = 8 cm
Perimeter = 2(l + b)
= 2(10 + 8)
= 2 $\times$ 18
= 36 cm.
For (ii)
l =18 cm, b = 12 cm
Perimeter = 2(l + b)
= 2(18 +12)
= 2 $\times$ 30
= 60 cm.