EASY
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Dominos’ large pizza is 14"14" in diameter. What is the minimum circumference of the pan needed to accommodate this pizza?

(Please use π=227)

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Important Questions on Perimeter and Area

EASY
Write the area of circle of radius r.
MEDIUM
A wheel has a radius of 28 cm. How many revolutions will it make to travel 704 m ? Use: π=227
EASY
Write the area of a semicircle of radius r=7 cm.
MEDIUM
The cost of fencing a circular field at the rate of 24 per metre is 5280. The field is to be ploughed at the rate of 0.50 per m2. If the cost of ploughing the field is k, find k. (Use π=227)
MEDIUM

The wheels of a car are of diameter 80 cm each. How many complete revolutions does each wheel make in 10 minutes when the car is traveling at a speed of 66 km per hour? use π=227

EASY

Only one circle can be drawn through three non collinear points.

EASY
Write the perimeter of semicircle of radius r.
EASY
If the ratio of the area of two circles is 9:16, then the ratio of their circumference _____.
EASY
A racetrack is in the form of a ring whose inner circumference is 528 m and the outer circumference is 616 m. Find the width of the track.
HARD
If the circumference of a circular sheet is 154 m, find its radius. Also find the area of the sheet. (Take π=227)
EASY
The circumference of a circle exceeds its diameter by 30 cm. Find the radius of the circle.
EASY
The inner circumference of a circular track is 330 m. The track is 10.5 m wide everywhere. Calculate the cost of putting up a fence along the outer circle at the rate of Rs 20 per metre.
MEDIUM

Find the circumference of the inner and the outer circles, shown in the adjoining figure. (Take π=3.14)

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MEDIUM
One circle has radius of 98 cm and a second concentric circle has a radius of 1 m 26 cm. How much longer is the circumference of the second circle than that of the first?
MEDIUM

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Susan has to cut a circle out of a square piece of cardboard to make a clock face. The square piece has a side of 28 cm. If Susan wants to paste a ribbon along the boundary of the circular portion then the minimum length of the ribbon is _____cm.

(Please use $ \pi =\frac{22}{7}$)

 

 

 

EASY
The hour and minute hands of a clock are 4.2 cm and 7 cm long respectively. Find the sum of the distances covered by their tips in 1 day.
EASY

Freddy, a farmer, has a circular patch of land of boundary of 62.8 m.

There is an electric pole exactly at the centre of the land. If Freddy wants to create a pathway passing right through the electric pole to cross his land then what will be the length of the pathway

(Please use $\pi =3.14$ )

EASY

Mahendra made a rhombus using a wire of length 44 cm. Virat took the same wire and bent it to form a circle. The radius of the largest circle that Virat can make is _____ cm.

(Please use $ \pi =\frac{22}{7}$)

MEDIUM
A gardener wants to fence a circular garden of diameter 21 m. Find the length of the rope he needs to purchase, if he makes 2 rounds of fence. Also find the costs of the rope, if it cost 4 per meter. (Take π=227)
EASY
Find the circumference of a circle whose radius is

(i) 28 cm.
(ii) 1.4 m.