Question

5. A rectangular floor of length 9 m and
breadth 6 m has black tiles laid in
the given pattern. Find the number of
tiles laid, if each tile has dimensions
40 cm x 10 cm.​

Answer 1

Answer:

area of floor = 9*6=54sq.m

area of tile = 40*10=400sq.cm=0.04sq.m

no. of tiles = 54/0.04=1350

Answer 2

Step-by-step explanation:

Length = 9m

breadth = 6m

Black tiles

l = 40m

b = 10m

9m = 900cm

6m = 600cm

$area \: of \: floor \: = \: l \times \: b \\ = 900 \times 600 \\ = 540000cm \: sq$

$black \: tiles \: area \: = \: l \times b \\ = 40 \times 10 \\ = 400cm \: sq$

$no \: of \: tiles \: = area \: of \: rectangle \: floor \: + area \: of \: tile \\ \\ \frac{540000}{400} = 1350 \: tiles$