Question

Find the area quadrant of a circle whose radius is 4cm.​

Answer 1

Answer:

$area \: of \: a \: quadrant = \frac{1}{4}r {}^{2}\pi$

$radius = 4cm$

$= \frac{1}{4} \times \frac{22}{7} \times 4 \times 4$

$= 22 \times 4 \div 7$

$= 88 \div 7$

$= 12.5cm {}^{2}$

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Answer 2

Step-by-step explanation:

Given that

Radius of circle is 4cm

To find

Area quadrant of a circle

Solution

As we know that

$area \: quadrant \: of \: circle = \frac{1}{4} \times \pi \times {radius}^{2}$

$= \frac{1}{4} \times \pi \times 4 \times 4$

by multiplication we get

$= \pi \times 4$

put

$\pi = 3.14$

hence

$= 3.14 \times 4$

$= 12.56 {cm}^{2}$

area of quadrant circle is 12.56 Sq.cm