Question

A room measuring 7 m by 6m is to be covered by square tiles of side 21cm.Find the number of tiles required to cover the floor.If the cost of one tile is ru.40,find the total cost of tiles?​

Answer 1

❥︎A᭄ɴsᴡᴇʀ࿐

Given :-

A room measuring 7 m by 6m is to be covered by square tiles of side 21cm.

To Find :-

number of tiles required to cover the floor.If the cost of one tile is ru.40,find the total cost of tiles?

Solution :-

7 m = 700 cm

6 m = 600 cm

Area of room = l × b

=> 700 × 600

=> 420000 cm²

Area of tile = side²

=> (21)²

=> 441 cm²

No. of tiles = 420000/441

No. of tiles = 952

Cost = No. of tiles × Rate

Cost = 952 × 40

Cost = 38080

Answer 2

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Side of square = 250 m

Perimeter of square = 4 x side

= 4 x 250 = 1000 m

Since, cost of fencing of per meter = Rs. 20

Therefore, cost of fencing of 1000 meters = 20 x 1000 = Rs. 20,000