# Find the Circumference and Area of Circle of Radius 4.2 Cm - Mathematics

Find the circumference and area of circle of radius 4.2 cm

#### Solution

Circumference = 2 × r

= 2xx22/7xx4.2

= (44/10xx 6) = 264/10

= 26.4 𝑐𝑚

Area = pir^2 = 22/7xx4.2xx4.2

=(22xx6xx42)/(10xx10)

=5544/100

55.44cm^2

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#### APPEARS IN

RD Sharma Class 10 Maths
Chapter 13 Areas Related to Circles
Exercise 13.1 | Q 1 | Page 12