A 115 m long and 64 m broad lawn has two roads inside it at right angles, one 2 m wide, running parallel to its length, and the other 2

Question

A 115 m long and 64 m broad lawn has two roads inside it at right angles, one 2 m
wide, running parallel to its length, and the other 2.5 wide, running parallel to its
breadth. Find the cost of gravelling the roads at 4.60 per m2.​

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Rose 1 month 2021-08-13T07:23:54+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-13T07:25:36+00:00

    Answer:

    sorry I am weak in math plzz support me then I answered you with struggle

    0
    2021-08-13T07:25:38+00:00

    Answer:

                                                        = Rs 23,100

    Step-by-step explanation:

    Length of the rectangular field, CD = 115 cm

    Breadth of the rectangular field, BC = 64 m

    ∴ Area of the rectangular lawn ABCD = 115 m × 64 m = 7360 m2

    Area of the road PQRS = 115 m × 2 m = 230 m2

    Area of the road KLMN = 64 m × 2.5 m = 160 m2

    Clearly, the area of EFGH is common to both the two roads.

    ∴ Area of EFGH = 2 m × 2.5 m = 5 m2

    ∴ Area of the roads = Area (KLMN) + Area (PQRS) − Area (EFGH)

                               = (230 m2 + 160 m2) − 5 m2 = 385 m2

    Rate of gravelling the roads = Rs 60 per m2

    ∴ Total cost of gravelling the roads = Rs (385 × 60)

                                                        = Rs 23,100

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