App Logo

No.1 PSC Learning App

1M+ Downloads
Find the length of a sector with central angle 90 and radius 14cm

A44 cm

B22 cm

C77 cm

D36 cm

Answer:

B. 22 cm

Read Explanation:

Length of a sector=2πr×θ/360= 2\pi{r}\times\theta/360

=2×22/7×14×90/360=2\times22/7\times14\times90/360

=22cm=22 cm


Related Questions:

The coordinates of centre of a circle are (4, 3) and radius is 5. (x, y) is a point on the circle. The equation of the circle is :
The coordinates of the centre of a circle are (4, 2) and its radius is 5. Which among the following is a point on the circle?
ഒരു വൃത്തത്തിന്റെ വ്യാസത്തിന്റെ ഒരറ്റം (1, 4). വൃത്തകേന്ദ്രം (3, -4) എങ്കിൽ വ്യാസത്തിന്റെ മറ്റേ അറ്റത്തിൻ്റെ സൂചക സംഖ്യകൾ ഏവ? .
The area of the ring between two concentric circles, whose circumference are 88 cm and 132 cm, is :
The radius of circle A is twice that of circle B and the radius of circle B is twice that of circle C. Their area will be in the ratio