Advertisements
Advertisements
प्रश्न
If the circumference of a circle is 176 cm, find its radius.
Advertisements
उत्तर
Circumference = 176 cm
Circumference = 2πr ... (where 'r' is the radius of circle)
176 = `2xx22/7xx"r"`
176 × 7 = 2 × 22 × r
1232 = 44r
`1232/44` = r
r = 28
∴ The radius of the circle = 28 cm
संबंधित प्रश्न
In the given figure, ∆ ABC is a right-angled triangle in which ∠ A is 90°. Semicircles are drawn on AB, AC and BC as diameters. Find the area of the shaded region
Find the circumference of the circle with the following radius: (Take `bb(pi = 22/7`)
14 cm
Find the angle subtended at the centre of circle of radius 5cm by an arc of length `((5pi)/3)` cm
Three equal circles, each of radius 6 cm, touch one another as shown in the figure. Find the area of enclosed between them.
OACB is a quadrant of a circle with centre O and its radius is 3.5 cm. If OD = 2 cm. find the area of
- quadrant OACB
- the shaded region.
A cart wheel makes 9 revolutions per second. If the diameter of the wheel is 42 cm, find its speed in km/hr.
Find the area of a circle whose circumference is 22 cm.
A wire bent in the form of an equilateral triangle has an area of `121sqrt(3)"cm"^2`. If the same wire is bent into the form of a circle, find the area enclosed by the wire.
Is it true that the distance travelled by a circular wheel of diameter d cm in one revolution is 2 π d cm? Why?
In covering a distance s metres, a circular wheel of radius r metres makes `s/(2πr)` revolutions. Is this statement true? Why?
