Question

Find the radius of a circle whose circumference is:
A) 44 cm
B) 66 cm
Plz full form m likho

Answer 1

Hey !!

Easy one

We know that circumference of circle = 2πr

but here given .. circumference = 44cm

so , 2πr = 44cm

2× 22/7 × r = 44

r = 44 ×7/44

r = 7cm ----1)Answer

Again like that ..

2πr = 66

2×22/7 ×r = 66

r = 66×7/44

=> 3×7/2 = 21/2 = 10.5cm ---------2)

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Hope it helps you !!!

@Rajukumar111

Answer 2

Hey friend,
Here is the answer you were looking for:
$1) \\ circumference = 2 \: \pi \: r \\ \\ 44 = 2 \times \frac{22}{7} \times r \\ \\ 44 \times 7 = 44r \\ \\ \frac{44 \times 7}{44} = r \\ \\ 7 = r \\ \\ r = 7cm \\ \\ 2) \\ circumference = 2 \: \pi \: r \\ 66 = 2 \times \frac{22}{7} \times r \\ \\ 66 \times 7 = 44r \\ \\ \frac{66 \times 7}{44} = r \\ \\ \frac{3 \times 7}{2} = r \\ \\ \frac{21}{2} = r \\ \\ r = \frac{21}{2} \\ \\ r = 10.5cm$


Hope this helps!!!!

@Mahak24

Thanks...
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