Question

how many tiles with the dimension of 12cm and 5cm will be needed to fit a region whose lenght and breadth 144cm and 100 respectively​

Answer 1

Answer:

240 tiles

Step-by-step explanation:

Area of the tile = 12 × 5 = 60 cm²

Area of the room = 100 × 144 = 14400 cm²

Tiles needed = 14400/60 = 240

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Answer 2

Step-by-step explanation:

Ncert solutions

Grade 6

Mathematics

Chapters in NCERT Solutions - Mathematics, Class 6

Exercises in Mensuration

Question 12

Q12) How many tiles whose length and breadth are 12 cm and 5 cm respectively will be needed to fit in a rectangular region whose length and breadth are respectively:

(a)100 cm and 144 cm

(b)70 cm and 36 cm

Solution

Transcript

Solution:

(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} = 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} = 42

Thus, 42 tiles are required.