Question

Radius of a circle is 3.5. Find its circumference and area. ​

Answer 1

Answer:

GIVEN:--

1)RADIUS =3.5

2)DIAMETER=2R=7

FORMULAS:---

1)CIRCUMFERENCE=2 πR= πD

2)AREA= πR^2

SOLVING:--

CIRCUMFERENCE= πD

                                = π7

                                =(22/7)X7

                                =22

AREA= πR^2

          = (22/7)X3.5X3.5

          =(22/7)X(7/2)X(7/2)

( HERE I TOOK 3.5 AS 7/2)

SOLVING WE GET

AREA= πR^2

         =77/2

         =38.5UNIT

AS U HAVENT MENTIONED THE UNIT

HOPE THIS HELPS YOU

Step-by-step explanation: