Advertisements
Advertisements
Question
Find the area of the circle if its circumfence is 88 cm.
Advertisements
Solution
Circumference = 88 cm
⇒ 2πr = 88
⇒ r = `(88 xx 7)/(2 xx 22)`
= 14 cm
Area of the circle = πr2
= `22/7 xx (14)^2`
= 616 cm2
RELATED QUESTIONS
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`)
A horse is tied to a pole with 28m long string. Find the area where the horse can graze.
A horse is placed for grazing inside a rectangular field 70 m by 52 m. It is tethered to one corner by a rope 21 m long. On how much area can it graze? How much area is left ungrazed?
The inside perimeter of a running track shown in the figure is 400 m. The length of each of the straight portions is 90 m, and the ends are semicircles. If the track is 14 m wide everywhere, find the area of the track. Also, find the length of the outer boundary of the track.
Find the volume and the surface area of the spheres in the following :
Radius= 2.1 cm
Find the area and perimeter of the circles with following: Radius = 10.5cm
Find the area and perimeter of the circles with following: Diameter = 35cm
Find the radius and area of the circle which has circumference equal to the sum of circumferences of the two circles of radii 3 cm and 4 cm respectively.
Find the circumference of the circles whose radii are given below.
49 cm
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 ____________.
