Question

For a sector if θ= 4 right angles amd radius = 7 cm .Find the area of sector 

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Answer 1

Answer:-

Given,

$\sf \theta = 4 \times 90 \degree = 360 \degree$

Radius=7cm.

So,

Area of the sector,

$\sf = \frac{ \theta}{360} \times \pi {r}^{2}$

$\sf = \cancel{ \frac{360}{360}} \times \frac{22}{7} \times 7 \times 7$

$\sf = 1 \times 22 \times 7$

$\sf = 154 {cm}^{2}$

Hence, the area is 154cm².

Answer 2

Answer:

Area of sector = Ф/360*πr^2

now Ф =4 and r = 7

∴4/360*22/7*7*7

=> 1/90*22*7

=>154/90

=>1.711111