Advertisements
Advertisements
प्रश्न
The area of the circle is given below; find the diameter.
176 sq cm
उत्तर
Area of the circle = 176 sq. cm ....[Given]
Area of the circle = πr2
∴ 176 = `22/7 × r^2`
∴ r2 = `176 × 7/22`
∴ r2 = 56
∴ r = `sqrt(56)` ….[Taking square root of both sides]
Diameter = 2r = `2sqrt(56)` cm
संबंधित प्रश्न
In PSR, RTQ and PAQ are three semicircles of diameters 10 cm, 3 cm and 7 cm respectively. Find the perimeter of the shaded region. [Use π=3.14]
Find the area of the sector of a circle whose radius is 14 cm and angle of sector is 45º
The perimeter of a sector of a circle of radius 5.2 cm is 16.4 cm. Find the area of the sector.
Find the circumference of the circle with the following radius: (Take `bb(pi = 22/7`)
28 mm
Find the angle subtended at the centre of circle of radius ‘a’ cm by an arc of length
`(api)/4` 𝑐𝑚
Below fig shows a sector of a circle, centre O. containing an angle 𝜃°. Prove that Perimeter of shaded region is 𝑟 (tan 𝜃 + sec 𝜃 +`(pitheta)/180`− 1)
Find the area and perimeter of the circle with the following :
Diameter = 77 cm
A bucket is raised from a well by means of a rope wound round a wheel of diameter 35 cm. If the bucket ascends in 2 minutes with a uniform speed of 1.1 m per sec, calculate the number of complete revolutions the wheel makes in raising the bucket.
The circumference of a garden roller is 280 cm. How many revolutions does it make in moving 490 meters?
Find the diameter of the sphere for the following :
Surface Area = 221. 76 cm2
