a square field has a side 150 m long .There is a road 5 m wide all around the park outside it .Find the cost of constructing the road at 250

Question

a square field has a side 150 m long .There is a road 5 m wide all around the park outside it .Find the cost of constructing the road at 250 rupees per sq metre

in progress 0
Ngọc Hoa 1 year 2021-09-03T15:35:28+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-09-03T15:37:04+00:00

    Answer:

    Cost to construct the road = 775000 rupees

    Step-by-step explanation:

    Square field has a side = 150 m

    Area of the field = (Side)²

                               = (150)²

                               = 22500 m²

    Length of the park with road around the field = 150 + 2×(width of the road)

                                                                                = 150 + (2×5)

                                                                                = 160 m

    Similarly, width of the park with road around the field = 160 m

    Area of the park with road = (Side)²

                                                = (160)²

                                                = 25600 m²

    Area of road = Area of the park with road – Area of the park

                         = 25600 – 22500

                         = 3100 m²

    Since, cost of constructing the road = 250 rupees per square meter

    Cost to construct the road with the given area = 250 × 3100

                                                                                  = 775000 rupees

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )