Question

How many envelopes can be made out of a sheet on
s can be made out of a sheet of paper 3 m 2
envelope requires a piece of paper of size 1o
"paper of size 18 cm by 12 cm?
6. Aroom is 12.5 m long and 8 m wide. A square cair
Om wide. A square carpet of side 8 m is laid.
area of the floor which is not carpeted.
7. A lane, 150 m long and 9 m wide, is to be paved
and 9 m wide, is to be paved with bricks, each m
7.5 cm. Find the number of bricks required.
8. A room is 13 m long and 9 m broad. Find the cost of carpeting the roor
broad at the rate of 65 per metre.
9/ The length and the breadth of a rectangular park are in
128 m. Find the area of the park.
10. Two plots of land have the same perimeter. One is a square of side
rectangle of length 70 m. Find the breadth of the rectangular plo
greater area and by how much?
19. The cost of cultivating a rectangular field at 35 per square metre is
the field is 40 m, find its length. Also, find the cost of fencing the li
(12.) The area of a rectangle is 540 cm2 and its length is 36 cm. Find it
13. A marble tile measures 12 cm x 10 cm. How many tiles will be re
size 4 m by 3 m? Also, find the total cost of the tiles at 22.50 pe
(14, Find the perimeter of a rectangle whose area is 600 cm’ and brea
15. Find the area of a square whose diagonal is 512 cm.
11
Hint. Area = x(diagonal) sq units.
1 2
16. Calculate the area of each one of the shaded regions given below
- 12 m
1 m
2 m
10 m
- 10 m
7.5 m
-​

Answer 1

Answer:

1) 21 envelopes can be made

2)36 sqm area is not carpeted