Question

The area of a circular plate is 38.5 metre square find its circumference

Answer 1

$\huge\mathbb{\blue{QUESTION-}}$

The area of a circular plate is 38.5m² find its circumference

$\huge\mathbb{\blue{SOLUTION-}}$

$\large\underline{\underline{\sf Given:}}$

• Area of circular plate (A) = 38.5 m²

$\large\underline{\underline{\sf To\:Find:}}$

• Circumference (C)

$\large\underline{\underline{\sf Formula\:Used:}}$

${\boxed{\sf Circumference\:of\: circle=2πr }}$

${\boxed{\sf Area\:of\:circle(A)=πr^2}}$

$\implies{\sf \green{Area=πr^2}}$

$\implies{\sf r^2=\dfrac{38.5}{3.14}}$

$\implies{\sf r=3.5\:m}$

$\implies{\sf \green{Circumcircle\:of\:circle(C)=2πr }}$

$\implies{\sf C=2×3.14×3.5}$

$\implies{\bf \red{C=2.85} }$

$\huge\mathbb{\blue{ANSWER-}}$

Circumference of circle ${\bf \red{2.85}}$

Answer 2

$\huge\underline\mathfrak\color{pink}Given$

• The area of a circular plate is 38.5 metre square.

$\huge\underline\mathfrak\color{pink}To \: Find$

• The circumference of the plate.

$\huge\underline\mathfrak\color{pink} Formula \: used$

Area of a circle

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

• $\sf{Circumference \: of \: a \: circle = 2\pi r}$

$\huge\underline\mathfrak\color{pink} Solution$

Area of a circle= $\pi {r}^{2} }$

$\sf{\implies {r}^{2} = \frac{38.5}{3.14} }$

$\sf{\implies r = 3.5 \: m}$

$\sf{Circumference \: of \: a \: circle = 2\pi r}$

$\sf{ = 2 \times 3.14 \times 3.5}$

$\sf{ = 21.98}$

$\huge\underline\mathfrak\color{pink}ThankYou$