Advertisements
Advertisements
प्रश्न
Complete the table below.
| Radius (r) | Diameter (d) | Circumference (c) |
| ...... | ...... | 616 cm |
Advertisements
उत्तर
Circumference, c = 616 cm
Now, c = 2πr ...(where 'r' is the radius)
⇒ 616 = `2xx22/7xx"r"`
⇒ r = `616xx1/2xx7/22`
= `(616 xx 7)/(2 xx 22)`
= `4312/44`
⇒ r = 98
So, radius = 98 cm
Diameter, d = 2r
= 2 × 98
= 196 cm
| Radius (r) | Diameter (d) | Circumference (c) |
| 98 cm | 196 cm | 616 cm |
संबंधित प्रश्न
A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. Find:
(i) the total length of the silver wire required
(ii) the area of each sector of the brooch
In the given figure, the side of square is 28 cm and radius of each circle is half of the length of the side of the square where O and O' are centres of the circles. Find the area of shaded region.
The area of circle, inscribed in equilateral triangle is 154 cms2. Find the perimeter of
triangle.
Find the length of the arc of a circle of diameter 42 cm which subtends an angle of 60° at the centre.
Draw the circumcircle of Δ PMT in which PM = 5.4, P = 60°, M = 70°.
Find the diameter of a circle whose circumference is equal to the sum of circumference of circles with radius 10 cm, 12 cm, and 18 cm.
A bucket is raised from a well by means of a rope which is wound round a wheel of diameter 77 cm. Given that the ascends in 1 minute 28 seconds with a uniform speed of 1.1 m/sec, calculate the number of complete revolutions the wheel makes in raising the bucket. (Take π =22/7)
The wheel of a car makes 10 revolutions per second. If its diameter is 70cm, find the speed of the car in km per hr.
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.
ABCD is a given rectangle with length as 80 cm and breadth as 60 cm. P, Q, R, S are the midpoints of sides AB, BC, CD, DA respectively. A circular rangoli of radius 10 cm is drawn at the centre as shown in the following figure. Find the area of shaded portion.
