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In a fountain park of dimensions 20 m × 15 m, there is a L shaped 1m wide flower bed as shown in the diagram below. The total cost of manuring for the flower bed at the rate of Rs 45 per sq. meters is

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Rs 1530

Rs 1233

Rs 1931

Rs 1212

answer is A.

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Detailed Solution

Given a fountain park with dimensions as 20 m × 15 m.
A L shaped 1m wide flower bed.
The cost of manuring the flower bed in L-shaped land is Rs 45 per

m^{2}

.
We know that the area of the rectangle is given by the product of its length and breadth.
Here, the area of the park is

= 20 × 15 = 300 m 2

Now the area of the small rectangular portion apart from L-shaped land having dimensions 14m x 19m,

= 14 × 19 = 266 m 2

Therefore, the area of L-shaped land will be,

= 300 − 266 = 34 m 2

So, the total cost of manuring will be,

R s 45 × 34 =

Rs 1530.
Therefore, the total cost of manuring the flower bed is obtained as Rs 1530.
Hence, the correct option is 1.

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