Question 1

In the figure, the radius of sector OAB with centre O is 4 cm and reflex ∠AOB = 325°. Let x be the arc length of the sector, find x, correct to 3 significant figures.

Accepted Answer

22.7 cm

Answer

2.44 cm

Answer

11.3 cm

Answer

45.4 cm

Question 2

In the figure, the radius and the area of the sector OAB with centre O are 6 cm and $12.5\pi cm^2$ respectively. Find $heta$ .

Accepted Answer

125°

Answer

130°

Answer

135°

Answer

127°

Question 3

The area of a sector is $4\pi cm^2$ and its radius is 6 cm. Find its arc length.

Accepted Answer

$\frac{4\pi}{3}cm$

Answer

$\frac{4\pi}{3}cm$

Answer

$\frac{4\pi}{3}cm$

Answer

$\frac{4\pi}{3}cm$

Question 4

The area of the sector OPQ with centre O in the figure is $12.5\pi cm^2$ . Find the radius of the sector.

Accepted Answer

$\frac{4\pi}{3}cm$

Answer

6 cm

Answer

$\frac{4\pi}{3}cm$

Answer

5 cm

Question 5

The figure shows an arc PQ of centre O. Find arc PQ .

Accepted Answer

$\frac{4\pi}{3}cm$

Answer

$\frac{4\pi}{3}cm$

Answer

1 cm

Answer

$\frac{4\pi}{3}cm$

Related quizzes

Related quizzes