Question

which is more costly? a painting square wall of side 15m at the rate of ₹ 5 per sq cm, b painting a wall 3m * 5m ,at the rate of ₹5 per sq cm.

Answer 1

Solution:

Lets take

a) painting a square wall,

Side=15 m

Area of square,

S=15×15

=225 sqm

The rate is 5rs /sqm,

= 225×5

=1,125rs

Now,

b) painting a rectangular wall

Length=3m

Width=5m

Area of rect,

L×b

=5×3

=15 sqm

Rate is 5rs /sqm,

15×5=75rs

Ans: Painting Square wall will cost more and painting rect wall will cost 75rs means less

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Answer 2

Answer:

By Priyadarshini Srichandan At'Po Kumarbasta

Step-by-step explanation:

(a) 1 M=100cm

15=1500cm²

area of square wall

5×5

1500×1500

=2250000

=cost of painting wall of

=Rs. 5*cm²

250000×5

=rs.11250000

(b) area of painting wall

3×100×5×100

300×500

150000 cm²

cost of painting wall

Rs. 5×cm²

150000×5=Rs.750000

Hence,(a) is greater.(answer)