Question

3. Find area of quadrant of circle whose
radius is 7cm​

Answer 1

Radius of circle:7cm

Area of quadrant of circle :

$\frac{1}{4} \times \pi {r}^{2}$

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

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

$\frac{1}{4} \times 154$

$38.5 {cm}^{2}$

Area of quadrant of circle is 38.5 cm^2

M

Answer 2

Given:

• Radius (r) = 7cm.

To Find:

• Area of quadrant of circle.

Formula Used:

• Area of quadrant of circle = ¼ × πr².

Solution:

Substituting values,

➙ ¼ × 22/7 × (7)²

➙ ¼ × 22/7 × 49

➙ ¼ × 154

➛ 38.5cm².

Hence,

• Area of quadrant of circle is 38.5cm².

ExtraShots:

• Area of circle = πr².

• Circumference of circle = 2πr.

• Area of quadrant of circle = ¼ × πr².

• Area of sector = θ/360 × πr².

• Area of sector = l × r / 2.

• Length of arc = θ/360 × πr.

• Area of segment = r² (πθ / 360 - sinθ / 2.