Question

if the formula for circumference of circle is 2pie r find circumference if radius is 9 cm. 2- find radius if circumference is 88 cm​

Answer 1

ANSWER :–

(1) 18 Π cm

(2) 14 cm

EXPLANATION :–

(1)

GIVEN :–

Radius of circle = 9 cm

TO FIND :–

circumference of circle.

USED FORMULA :–

➡️ circumference of circle = 2 Π r

SOLUTION :–

=》 circumference of circle = 2 Π r

=》 circumference of circle = 2 Π (9) = 18Π cm

(2)

GIVEN :–

circumference of circle is 88 cm.

TO FIND :–

Radius of circle.

USED FORMULA :–

➡️ circumference of circle = 2 Π r

SOLUTION :–

=》circumference of circle = 2 Π r

=》 88 = 2 Π r

=》 2 Π r = 88

=》 r = 44/Π

=》 r = (44/22) × 7 = 14 cm

Answer 2

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