Question

9. Find the cost of fencing a square park of side 125 m at the rate of ₹15 per metre.
10. Write in decimals:
i) 3
4
ii) 5
100
11. Sonu had ₹25.50. He bought one pen for ₹17.75. How much money does he
have now?
12. The length of a room is 3 metre less than 2 times the breadth of the room.
What is the length, if the breadth is p metre ?
13. The area of a rectangular piece of cardboard is 48cm2
and its width is 6 cm. What is the length of the cardboard ?
14. Express as in km using decimals.
i) 9 m ii) 87 m
iii) 50 km 45 m iv) 564 m
15. The side of a regular pentagon is denoted by ‘h’. Express the perimeter of the
pentagon using h.

Answer 1

Step-by-step explanation:

9) Answer :- Perimeter of square :- 4 × Side

:- 4×125

:-500

rate of fencing of per metre :- Rs 15

:- 15× 500

:- Rs 7500

11) Answer :- ₹25.50-₹17.75= 7.75

Sonu ₹7.75 money have now

Answer 2

Answer:

9)Remember when there is a thing about fencing something you always have to find the perimeter ,in here it is a square field so the perimeter of square is 4×side

length of each side = 125 m

perimeter = 125×4 m

=600m

now , it is given that the cost of fencing one meter is ₹15

so ,the cost of fencing 600m = ₹600×15

= 9000

10)3/4 (we just have to divide it ) = 0.75

5/100=0.05

11)amount sonu had =₹25.50

he bought a pen for = ₹17.75

therefore,money he has =7.75