The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and ceiling at the rate of Rs 7.50 per m^2.
in Mathematics
14 views
3 Votes
3 Votes

The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and ceiling at the rate of Rs 7.50 per m2.

in Mathematics
by
7.2k Points

1 Answer

3 Votes
3 Votes
 
Best Answer

Solution —

Length (l) of room = 5m

Breadth (b) of room = 4m

Height (h) of room = 3m

According to the question  four walls and the ceiling of the room are to be white washed.

Total area to be white washed = Area of walls + Area of ceiling of room

= 2lh+2bh+lb

= [2×5×3+2×4×3+5×4]

= (30+24+20)

= 74

Area = 74 m2

Also,

Cost of white wash per m2 area = Rs.7.50 (Given in question )

Cost of white washing 74 m2 area = Rs. (74×7.50)

= Rs. 555

by
7.2k Points

Related Questions

2 Votes
2 Votes
1 Answer 30 Views

Welcome To Informesia

Informesia Helps You To Prepare India's All States Board Exams (CBSE, ICSE, UP Board, BSEB, HPBOSE, RBSE, MSBSHSE) and Competitive Exam Like JEE (Main + Advanced), AIIMS, NEET, KVPY, NTSE, BITSAT, Olympiad, CLAT...etc.
For Any Query or Suggestion, Please Contact us on :
[email protected]

Connect us on Social Media