Question

Find the circumference and area of a circle with a) diameter = 49cm. b) radius =35cm. Take П= 227. C is 154 cm a is 1886.5 sq cm c is 220cm a is 3850 sqcm

Answer 1

Step-by-step explanation:

The circumference of the circle is 154 cm.

Step-by-step explanation:

Given : Diameter of the circle = 49 cm and value of \pi =\frac{22}{7}π=

7

22

To find : The circumference of the circle.

Solution :

The circumference of the circle is given by C=2\pi rC=2πr

or in the form of a diameter the circumference of the circle is C=\pi dC=πd

Now, we have given d=49 cm and value of \pi =\frac{22}{7}π=

7

22

Substitute the value in the formula,

C=\pi dC=πd

C=\frac{22}{7}\times 49C=

7

22

×49

C=22\times 7C=22×7

C=154 cmC=154cm

Therefore, The circumference of the circle is 154 cm.