Question

if radius of the circle is 7cm then find diameter and area of circle​

Answer 1

Answer:

d=2 ×radius=2×7cm=14cm

area=πr²=49πcm²

Answer 2

❥${\purple{\underline{\underline{\large{\mathtt{ANSWER:-}}}}}}$

Diameter of circle is 14 cm and area of circle is 154 cm².

❥${\purple{\underline{\underline{\large{\mathtt{EXPLANATION:-}}}}}}$

•Given:-

• Radius(r) of circle = 7 cm.

•To find:-

• Diameter of the circle.
• area of the circle.

•Solution:-

$\sf{Radius=7\:cm}$

$\sf{We\: know,}$

${\boxed{\sf{\green{Diameter\:=\:2\times\: Radius}}}}$

$\sf{Diameter\:of\: circle=(2\times\:7)\:cm}$

$\sf{\:\:\:\:\:\:\:\:\:\:\:\:\:\:=14\:cm}$

Diameter of circle= 14 cm.

$\sf{We\: know,}$

${\boxed{\sf{\blue{Area\:of\: circle\:=\:\pi\:r^2}}}}$

$\sf{Area\:of\: circle=(\pi\:r^2)\:cm^2}$

$\sf{\:\:\:\:\:\:\:=\frac{22}{7}\times\:7\times\:7\:cm^2}$

$\sf{\:\:\:\:\:\:\:=154\:cm^2}$

Area of circle = 154 cm².

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