Question

A rectanglular floor with length and breadth 20m and 15m respectively

needs to be covered with square tiles of length 20cm. How many such tiles

are required to cover the rectangular floor?​

Answer 1

Step-by-step explanation:

Area of floor =20x15=300 sq. m

Area of tile =. 2x.2=.04sq.m

No. Of tiles =300/.04=7500

Answer 2

Given :

• Length of rectangular floor = 20m
• Breadth of rectangular floor = 15m
• Rectangular floor is to be covered by square tile
• Side of square tile = 20cm

To find :

Number of tile required

Formula used :

• Area of rectangle = (length)×(breadth)
• Area of square = (side)²

Solution :

Here we have to use concept of area. Here we need to equate area of rectangular floor with area of tiles used.

➝ Area of rectangular floor = Total area of required tiles

➩ Area of rectangular floor = (Number of tiles required) × ( Area of one tile )

➩ (20m)×(15m) = (Number of tiles required) × (20cm)²

➩ 300m² = (Number of tiles required)× 400cm²

➩ 300m² × 10000cm²/m² = (Number of tiles required) × 400cm²

➩ (Number of tiles required) = 300×10000/400

➩ (Number of tiles required) = 3×10000/4

➩ (Number of tiles required) = 0.75 × 10000

➩ (Number of tiles required) = 7500

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ANSWER : 7500 tiles