Question

A rectangular board measures 21m by 70cm. circular plates are to be cut out from the board of diameter 14cm. how many plates can be cut and how much board will be left .



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Answer 1

Answer:

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Answer 2

Answer:

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Step-by-step explanation:

Length of rectangular board = 21 m = 2100 cm

Breadth of rectangular board = 70 cm

Area of board = 147000 cm^2

Diameter of plate = 14 cm

Radius of plate = 7cm

Area of plate = 154 cm^2

No. of circular plates can be cut = 954

Area of 954 plates =  146916 cm ^2

Area of board left = 84cm^2

Hence 154 plates can be cut and 84 sq.cm. board will be left