Question

the circumference of a circle is 440 metre find the radius and area of circle
$(\pi = 3.14)$
​

Answer 1

Answer:

Circles

Step-by-step explanation:

★ Given ;

» Circumference of circle = 440 m

» Radius = ??

» Area of circle = ??

1 ] Radius

Circumference = 2 × π × R

R = Circumference / 2 × π = 440 / 2 × 3.14 = 440 / 6.28

Radius = 70 metres

2 ] Area of circle

Area ( A ) = π R²

= 3.14 × ( 70 )²

= 15,386 m²

Hope it helps you

Answer 2

Given:

• A circle with circumference 440m

To Find:

• Radius and area of circle

Solution:

We know that,

• Circumference of circle= 2πr

• Area of circle= πr²

It is given that,

Circumference= 440m

$\longrightarrow\sf{2\pi r=440}$

$\longrightarrow\sf{r=\dfrac{220}{\pi}}$

$\longrightarrow\sf{r=70.06m}$

$\longrightarrow\sf{Area\:of\:Circle=\pi \bigg(\dfrac{220}{\pi}\bigg)^{2}}$

$\longrightarrow\sf{Area\:of\:Circle=\pi \bigg(\dfrac{48400}{\pi^{2}}\bigg)}$

$\longrightarrow\sf{Area\:of\:Circle=\dfrac{48400}{\pi}}$

$\longrightarrow\sf{Area\:of\:Circle=\dfrac{48400}{3.14}}$

$\longrightarrow\sf{Area\:of\:Circle=15414.01m^{2}}$

Hence, radius and area of given circle are 70.06 m and 15414.01 m².