Question

8. A rectangular marble tile is 3 cm by 5 cm. The number of tiles required to cover a floor which measures 12 m by 10 m is (a) 80000 (b) 80 (c) 800​

Answer 1

Answer:

it is 80

Step-by-step explanation:

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Answer 2

Answer:

A) 80000

Step-by-step explanation:

Area of marble tiles

$= 3 \times 5 \: cm \\ = 15 {cm}^{2}$

Area of the floor

$12m \times 10m \\ = 1200cm \times 1000cm \\ = 1200000 {cm}^{2}$

Tiles need

$1200000 \div 15 = 80000$