.A Gardner wants to fence a circular Garden of diameter 28 m. Find the Length of the rope he needs to purchase. Also find the cost of the rope If its costs 5 rupees per metre.
Answers
Answer:
Diameter of the circular garden=21m
∴ Radius of the circular garden=
2
21
m
Now, circumference of circular garden=2πr=2×
7
22
×
2
21
=22×3=66m
The gardener makes 2 rounds of fence so the total length of the rope of fencing =2×2πr=2×66=132m
Since the cost of 1 meter rope=Rs. 4
Therefore, cost of 132 meter rope=4× 132=Rs. 528.
Answer:
The total Length of the rope needed to fence the Garden is 88 m and the total cost of the rope is Rs. 440.
Step-by-step explanation:
Diameter of the Garden = 28 m
Radius of the Garden = 28/2 = 14 m
Circumference of the Garden = 2πr
Length of the rope needed = Circumference of the Garden
= 2πr
= 2 × 22/7 × 14
= 88 m
Cost of the rope per metre = Rs. 5
Cost of 88 metres of the rope = 88 × 5 = Rs. 440
Hence, the total Length of the rope needed to fence the Garden is 88 m and the total cost of the rope is Rs. 440.