Question

length of a classroom is two times its height and its breadth is one whole number one by two times its height the cost of whitewashing the wall at the rate of rupee 1000 find the cost of tiling the floor at the rate of rupee 20% is square metre

Answer is rupees 6000

Answer me fast ​

Answer 1

Answer:

RS 324

Step-by-step explanation:

MATHS

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Asked on December 20, 2019 by

Priyanshi Desai

Length of class-room is two times its height and breadth is 1

2

1

times its height. The cost of white washing the walls at the rate of Rs.1.60 per m

2

is Rs.179.20. Find the cost of tiling the floor at the rate of Rs.6.75 per m

2

.

Help best friend

Study later

ANSWER

Let height of the room be 'h' m.

∴ length of the room=2hm

breadth of the room=

2

3

hm.

area of 4 walls=

1.60

179.20

=112m

2

2(l+b)×h=112

2(2h+

2

3

h)×h=112

2×

2

7

×h

2

=112

h

2

=

14

112×2

=16

h=

16

=4m

length=4×2=8m, breadth=

2

3

×4=6m

for, tiling the floor area=l×b=8×6=48m

cost of tiling=48×6.75=Rs.324