Question

Find the number of square tiles of sides 100 cm needed to fit in a rectangular region whose length and breadth are 12 m and 9 m.

Answer 1

${\huge{\bold{\underline{Answer:-}}}}$

(a) Area of region = 100 cm x 144 cm = 14400 cm.sq

Area of one tile = 5 cm x 12 cm = 60 cm.sq

Number of tiles = \frac{Area\ of\ region}{Area\ of\ one\ tile}

Area of one tile

Area of region

= 240

Thus, 240 tiles are required.

(b) Area of region = 70 cm x 36 cm = 2520 cm.sq

Area of one tile = 5 cm x 12 cm = 60 cm.sq

Number of tiles = \frac{Area\ of\ region}{Area\ of\ one\ tile}

Area of one tile

Area of region

= 42

Thus, 42 tiles are required

Answer 2

Answer:

so first area of rectangular region- 12 * 9 = 108 m or 10800 cm

now find area of 1 tile - 100*100 = 1000 cm

and now 108000 / 1000 = 108 tiles

Step-by-step explanation: