Question

A gardener wants to find the circular garden of diameter 21 metre find the length of the Rope if he makes 2 round of pens also find the cost of the Rope if it cost rupees four per metre

Answer 1

Answer:

Step-by-step explanation:Diameter is 70cm

Radius=70/2=35cm

Circumference= 2piR

2×22/7×35

=220

No of revolutions-->

11×100×7/2×22×35

=5

(Ans) No of revolutions is 5.

Thank you

Answer 2

Answer:

$Answer:</p><p>\fbox \pink{diameter} = 21m \\ \\ \fbox \purple{radius} = \frac{21}{2}m \\ \\ \fbox \red{circumference} = 2\pi \: r \\ \\ 2 \times \frac{22}{7} \times \frac{21}{2} = \frac{22}{7} \times 21 \\ \\ 22 \times 3 = 66m \\ \\ \fbox \green{length \: of \: rope \: required} = 2 \times 66 = 132m \\ \\ \fbox \blue{cost} = 1m \: rope = 4 \\ \\ 132m \: rope = 4 \times 132 = 528$