Question

find the area of each Circle to find the radius of 7/4​

Answer 1

$\huge\mathbb{\underline{SOLUTION:-}}$

$\bold{Given:-}\begin{cases}\sf{Radius\:of\:circle}\\ \sf{\implies \frac{7}{4}}\end{cases}$

• We have to find the area of circle

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

$\bf\underline{\underline{\red{According\:To\: Question:-}}}$

• Now there is the value of π

take $\sf\implies \frac{22}{7}$

• as the value of π

$\sf\implies Area\:of\:circle=\frac{22}{7}\times \frac{7}{4}\times \frac{7}{4}\\ \\ \sf\implies Area\:of\: circle=\frac{\cancel{22}}{\cancel7}\times \frac{\cancel7}{\cancel4}\times \frac{7}{4}\\ \\ \sf\implies Area\:of\:circle=\frac{11\times 7}{2\times 4}\\ \\ \sf\implies Area\:of\:circle=\cancel{\frac{77}{8}}\\ \\ \sf\implies Area\:of\:circle=9.625unit{}^{2}$

$\boxed{\sf{\purple{Area\:of\: circle=9.625unit{}^{2}}}}$

$\mathbb{\underline{\blue{FORMULA\: RELATED\: CIRCLE :-}}}$

$\sf 1) Circumference\:of\: circle= 2 \pi r \\ \\ \sf 2) Area\:of\: circle=\pi r{}^{2}\\ \\ \sf 3) Diameter\:of\: circle=2r\\ \\ \sf 4) radius\:of\: circle=\frac{Diameter}{2}$

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