Question

7. Mr Saxena bought a plot of land 80 m by 40 m at 350000 per m2. How much did the plot cost him?
8 How many tiles, each 25 cm by 20 cm, are required for the floor of a room, 12 m long and 9 m wide?
9. How many handkerchiefs, each 35 cm​

Answer 1

8.Length of tile = 25 cm

Breadth of tile = 20 cm

$Area \: of \: tile = Length \times Breadth = 25 \times 20 = 500 cm^2$

1 m = 100 cm

Length of floor = 12 m = 1200 cm

Breadth of floor = 9m = 900 cm

$Area of floor =Length \times Breadth = 1200 \times 900 = 1080000$

7 and 9 are in image

$No. \: of \: tiles \: required = \frac{1080000}{500}$

Hence 2160 tiles are required to cover floor.