Advertisements
Advertisements
рдкреНрд░рд╢реНрди
Find the circumference of the circle with the following radius: (Take `bb(pi = 22/7`)
21 cm
Advertisements
рдЙрддреНрддрд░
r = 21 cm
Circumference = 2πr
= `2 xx 22/7 xx 21`
= 132 cm
APPEARS IN
рд╕рдВрдмрдВрдзрд┐рдд рдкреНрд░рд╢реНтАНрди
In Fig. 6, find the area of the shaded region, enclosed between two concentric circles of radii 7 cm and 14 cm where ∠AOC = 40°. (use `pi = 22/7`)
Three semicircles each of diameter 3 cm, a circle of diameter 4.5 cm and a semicircle of radius 4.5 cm are drawn in the given figure. Find the area of the shaded region
In circle of radius 6cm, chord of length 10 cm makes an angle of 110° at the centre of circle find Length of arc
In circle of radius 6cm, chord of length 10 cm makes an angle of 110° at the centre of circle find The area of sector
In making 1000 revolutions, a wheel covers 88 km. The diameter of the wheel is
Find the diameter of the sphere for the following :
Volume = `523 17/21` cm3
A wire in the form of a circle of radius 42cm. It is bent into a square. Determine the side of the square and compare the area of the regions enclosed in the two cases.
The radius of a circular plot is 7.7 metres. How much will it cost to fence the plot with 3 rounds of wire at the rate of 50 rupees per metre?
The perimeter of circular and square fields is equal. If the area of the square field is 484 m2 then the diameter of the circular field is ____________.
Length of tape required to cover the edges of a semicircular disc of radius 10 cm is ______.
