Question

find the area of circle which radius is 15 cm



plz plz plz give answer this is urgent ​

Answer 1

Given : Radius of Circle is 15 cm .

Need To Find : Area of Circle.

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❍ Formula for Area of Circle is given by :

As , We know that ,

$\star\boxed{\pink{ \sf{ Area_{(Circle )} = \pi r^{2} \:sq,units }}}$

Where ,

• r is the Radius of Circle and $\pi = \dfrac{22}{7}$

⠀⠀⠀⠀⠀⠀$\underline {\frak{\star\:Now \: By \: Substituting \: the \: Given \: Values \::}}$

$\qquad :\implies \sf{ Area_{(Circle)} = \dfrac{22}{7} \times 15^{2} }$

$\qquad :\implies \sf{ Area_{(Circle)} = \dfrac{22}{7} \times 225 }$

$\qquad :\implies \sf{ Area_{(Circle)} = \dfrac{22}{\cancel {7}} \times \cancel {225}}$

$\qquad :\implies \sf{ Area_{(Circle)} = 22 \times 32.14 }$

⠀⠀⠀⠀⠀$\underline {\boxed{\pink{ \mathrm {  Area_{(Circle)} = 707.14\: cm^{2}}}}}\:\bf{\bigstar}$

Therefore,

⠀⠀⠀⠀⠀$\therefore {\underline{ \mathrm {  Area\:of\:Circle \:is\:\bf{707.14\: cm^{2}}}}}$

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$\large {\boxed{\sf{\mid{\overline {\underline {\star More\:To\:know\::}}}\mid}}}$

• $\begin{gathered}\boxed{\begin {array}{cc}\\ \dag\quad \Large\underline{\bf Formulas\:of\:Areas:-}\\ \\ \star\sf Square=(side)^2\\ \\ \star\sf Rectangle=Length\times Breadth \\\\ \star\sf Triangle=\dfrac{1}{2}\times Breadth\times Height \\\\ \star \sf Scalene\triangle=\sqrt {s (s-a)(s-b)(s-c)}\\ \\ \star \sf Rhombus =\dfrac {1}{2}\times d_1\times d_2 \\\\ \star\sf Rhombus =\:\dfrac {1}{2}p\sqrt {4a^2-p^2}\\ \\ \star\sf Parallelogram =Breadth\times Height\\\\ \star\sf Trapezium =\dfrac {1}{2}(a+b)\times Height \\ \\ \star\sf Equilateral\:Triangle=\dfrac {\sqrt{3}}{4}(side)^2\end {array}}\end{gathered}$

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