Advertisements
Advertisements
Question
Area of a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’ is ______.
Options
2πn
πm2
πp2
πn2
Advertisements
Solution
Area of a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’ is `bb(underline(πn^2))`.
Explanation:
Given, diameter = m, radius = n and circumference = p
∴ Area of circle = πr2 = πn2
APPEARS IN
RELATED QUESTIONS
Find the area of the following circle, given that diameter = 49 m.
In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find the length of the arc. (Use π = `22/7`)
In the following figure, shows the cross-section of railway tunnel. The radius OA of the circular part is 2 m. If ∠AOB = 90°, calculate:
the height of the tunnel

If the difference between the circumference and radius of a circle is 37 cm, then using π = \[\frac{22}{7}\] the circumference (in cm) of the circle is
In the following figure, the shaded area is

In the given figure, ABCD is a rectangle with AB = 80 cm and BC = 70 cm, ∠AED = 90° and DE = 42 cm. A semicircle is drawn, taking BC as diameter. Find the area of the shaded region.

A square is inscribed in a circle of radius 7 cm. Find the area of the square.
Find the length of the rope by which a bull must be tethered in order that it may be able to graze an area of 2464 m2
The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 24 cm and 7 cm is ______.
A table cover of dimensions 3 m 25 cm × 2 m 30 cm is spread on a table. If 30 cm of the table cover is hanging all around the table, find the area of the table cover which is hanging outside the top of the table. Also find the cost of polishing the table top at ₹ 16 per square metre.
