Advertisements
Advertisements
प्रश्न
Find the following ratio.
The ratio of circumference of circle with radius r to its area.
उत्तर
Radius of the circle = r units
∴ Circumference of the circle = 2πr units
Area of the circle = πr2 square units
Circumference of the circle : Area of the circle =
`2πr : πr^2 = (2πr)/(πr^2) = 2/r = 2 : r`
Thus, the ratio of circumference of circle with radius r to its area is 2 : r.
APPEARS IN
संबंधित प्रश्न
From the following pairs of numbers, find the reduced form of ratio of first number to second number.
72, 60
Find the reduced form of the ratio of the first quantity to second quantity.
700 rs, 308 rs
Find the reduced form of the ratio of the first quantity to second quantity.
3.8 kg, 1900 gm
Convert the following ratio into percentage.
15 : 25
Convert the following ratio into percentage.
`7/16`
The ratio of two numbers is 31 : 23 and their sum is 216. Find these numbers.
If the product of two numbers is 360 and their ratio is 10 : 9, then find the numbers.
For the following numbers write the ratio of first number to second number in the reduced form.
21, 48
For the following numbers write the ratio of first number to second number in the reduced form.
138, 161
Write the following ratio in the reduced form.
The ratio of perimeter to the area of a square, having side 4 cm.
