Curioustab

Home » Aptitude » Area

The area of circle is 38.5 sq. cm. Its circumference is?

6.20 cm
11 cm
22 cm
121 cm

Correct Answer: 22 cm

Explanation:

∵ ( 22 x r²) / 7 = 38.5
⇒ r² =(38.5 x 7) /22
∴ r = 3.5 cm
∴ Circumference = 2 x (22/7) x 3.5 cm
= 22 cm

← Previous Question Next Question→

More Questions from Area

If the circumference of a circle is the 352 meters, then its area in m square is?
Area of a square with side x is equal to the area of a triangle with base x. The altitude of the triangle is?
In a triangle ABC, BC = 5 cm AC = 12 cm and AB = 13 cm. The length of a altitude drawn from B on AC is?
The perimeter of an isosceles triangle is equal to 14 cm . The lateral side is to the base in the ratio 5 : 4 the area of the triangle is?
The sides of a triangular board are 13 meters, 14 meters and 15 meters. The cost of paining it at the rate of Rs. 8.75 per m 2 is?
If the diagonal of a square is double, how does the area of the square change?
A circle and a square have same area. The ratio of the side of the square and the radius of the circle is?
The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutions in 5 seconds. The speed of the vehicle is?
A circular disc of area 0.49 π square meters, rolls down a length of 1.76 km. The number of revolutions it makes is?
The Number of rounds that a wheel of diameter 7/11 m will make in going 4 km, is?

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion