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Length of a side of a square land is 300m.find the length of the wall in metre, reqd. to surround the land. if the width of the wall be 3 decimetres find the area of the land reqd. to build the wall.find the cost of building the wall at the rate of rs 5000/100sq metre.

Answers (1)

The side of a square land is (a) = 300 meter
Perimeter (4a) = 300 x 4 = 1200 meter

So the required length of the wall to surround the land = 1200 meter

The area of the land required to build the wall is = 1200x0.3 =  360 square meter

The cost of the building the wall = 360x5000/100 = Rs 18000

Posted by

Ravindra Pindel

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