Question

Length of a garden is 3 times of its breadth
(a)find the perimeter in terms of x,if the breadth is x
(b)if the perimeter of garden is 200 m2,find the length and breadth
(c)it cost 50$ to clean per square metre, then find the cost to clean the whole garden ​

Answer 1

Step-by-step explanation:

let the breadth of the garden be x

the length be 3x

a) perimeter = 2(l+b)

= 2(3x + x)

= 2 (4x)

= 8x

b) area of the garden = l×b

200m² = 4x (x)

200m² = 4x²

x= 200/4 = 50 m

So, b = x = 50m

l = 3x = 3 × 50 = 150 m

c) Required money to clean the garden = 50$ ×50m

= 2500 $

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