Advertisements
Advertisements
प्रश्न
Each side of a square is 44 cm. Find its perimeter. If this perimeter is equal to the circumference of a circle, find the radius of the circle.
उत्तर
The side of a square = 44 cm
∴ Its perimeter = 4 × Side
= 4 × 44 = 176 cm
Since, Its is given that, Circumference of a circle = Perimeter of a square
∴ Circumference of a circle = 176 cm
Let, the radius of the circle = r
⇒ 2πr = 176 cm
r = `(176xx7)/(2xx22)` = 28 cm
∴ The radius of the circle = 28 cm
APPEARS IN
संबंधित प्रश्न
In Fig 4, a circle is inscribed in an equilateral triangle ABC of side 12 cm. Find the radius of inscribed circle and the area of the shaded region.[Use π=3.14 and √3=1.73]
The inner circumference of a circular track is 220 m. The track is 7m wide everywhere. Calculate the cost of putting up a fence along the outer circle at the rate of j – 2 per metre. (Use π = 22/7)
A field is in the form of circle. A fence is to be erected around the field. The cost of fencing would to Rs. 2640 at rate of Rs.12 per metre. Then the field is to be thoroughs ploughed at cost of Rs. 0.50 per m2. What is amount required to plough the field?
The area of a circle is 38.5 cm2. The circumference of the circle is
The area of a square is the same as the area of a square. Their perimeters are in the ratio
If the perimeter of a semi-circular protractor is 36 cm. Find its diameter.
Diameters of different circles are given below. Find their circumference (Take π = `22/7`)
d = 28 mm
Find the number of revolutions made by a circular wheel of area 1.54 m2 in rolling a distance of 176 m.
Circumference ‘C’ of a circle can be found by multiplying diameter ‘d’ with ______.
A photograph of Billiard/Snooker table has dimensions as `1/10`th of its actual size as shown in the given figure:
The portion excluding six holes each of diameter 0.5 cm needs to be polished at rate of ₹ 200 per m2. Find the cost of polishing.
