Question

Find the circumference of a circle of diametre = 28 cm, using π = 3.14 ​

Answer 1

Step-by-step explanation:

1st method

Diameter of circle =2.8cm (given)

Circumference of circle when diameter is given =πd

hence

Circumference=3.14×2.8

=8.792cm

2nd method

Diameter of circle =2.8 cm (given)

Diameter is double of radius

hence

Radius =2.8/2=1.4

Circumference of circle=2πr

Circumference=2×3.14×1.4

=8.792

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Answer 2

Topic:-

Curcumfrenec and area pf cicle

Given:-

Find the circumference of a circle of diametre = 28 cm, using π = 3.14

To find:-

The circeumfrence of circle.

Solution:-

$Circumfrence = 2{\pi}r$

$= (2 \times 3.14 \times 14)cm$

$= 87.92cm$

Answer:-

$\bf{ \color{blue}{87.92}}$