Advertisements
Advertisements
Question
The walls and ceiling of a room are to be plastered. The length, breadth and height of the room are 4.5 m, 3 m, and 350 cm respectively. Find the cost of plastering at the rate of Rs 8 per m2.
Advertisements
Solution
Given,
Length of the room `(l)` = 4.5 m
Breadth of the room `(b)` = 3 m
Height of the room `(h)` = 350 cm = 3.5 m
And the cost of plastering = Rs 8 per m2
∴ Area of the walls = `2h(l + b)`
= 2 × 3.5 × (4.5 + 3)
= 7 × (7.5)
= 52.5 m2
Area of the ceiling = `lb`
= 4.5 × 3
= 13.5 m2
Area of the room = 52.5 + 13.5
= 66 m2
Hence, the cost of plastering = 66 × 8 = Rs 528
APPEARS IN
RELATED QUESTIONS
Each side of a rhombus is 18 cm. If the distance between two parallel sides is 12 cm, find its area.
The area of a rhombus is equal to the area of a triangle. If the base ∆ is 24 cm, its corresponding altitude is 16 cm and one of the diagonals of the rhombus is 19.2 cm. Find its other diagonal.
Find the area of rhombus PQRS shown in the following figure.
Find the area of a rhombus whose base is 14 cm and height is 9 cm.
Find the missing value.
| Diagonal (d1) | Diagonal (d2) | Area |
| 26 m | 468 sq.m |
The area of a rhombus is 100 sq.cm and length of one of its diagonals is 8 cm. Find the length of the other diagonal
The area of the rhombus when both diagonals measuring 8 cm is
The area of the rhombus is 576 sq.cm and the length of one of its diagonal is half of the length of the other diagonal then find the length of the diagonal
A man has to build a rhombus shaped swimming pool. One of the diagonal is 13 m and the other is twice the first one. Then find the area of the swimming pool and also find the cost of cementing the floor at the rate of ₹ 15 per sq.cm
What is the area of the rhombus ABCD below if AC = 6 cm and BE = 4 cm?
