Introduction to pi and radius math examples:
Pi is the important symbol in math. Radius is the measure that is mainly used in circles. Pi and radius are the terms that are mostly used in sphere, cone, and cylinder. Because these figures are the combination of circle shapes. In this article we have to discuss about “Pi and radius math examples”.
Radius: radius is the distance between the center to the point on the circle shapes.
pi: it is constant term, the value is 3.14 or `22/7 `
Brief Description of Pi and Radius Math Examples
Example 1:
Find the area and circumference of the circle whose radius is equal to 7 cm.
Solution:
Given radius is equal to 7cm.
Area:
Area of the circle = p r^2 square units
Pi is represented by the symbol p = `(22)/(7)` or 3.14 and r= 7 cm
Therefore area = `(22)/(7)` x 7 x 7
That is A= 154 square cm
Perimeter:
Perimeter of the circle = 2 p r square units
Therefore area =2x `(22)/(7)` x 7
That is A= 44 cm
Example 2:
Find the area and volume of the sphere whose radius is equal to 7 cm.
Solution:
Given radius is equal to 7cm.
Area:
Area of the Sphere = 4 p r^2 square units
Pi is represented by the symbol p = `(22)/(7)` or 3.14 and r= 7 cm
Therefore area = 4 x `(22)/(7)` x 7 x 7
That is A= 616 square cm
Volume:
Volume of the Sphere = `(4)/(3)` p r 3Cubic units
Therefore Volume =`(4)/(3)` x `(22)/(7)` x 73
That is V= 1437.3 Cubic cm
Please express your views of this topic formula to calculate percentage by commenting on blog.
Example 3:
Find the area and volume of the cone whose radius is equal to 7 cm and slant height is equal to 10 cm and height is equal to 6 cm.
Solution:
Given radius is equal to 7 cm and slant height is equal to 10 cm and height is 6 cm.
Area:
Area of the Cone = p r (l + r) square units
Pi is represented by the symbol p = `(22)/(7)` or 3.14 and r= 7 cm and l= 10 cm
Therefore area = `(22)/(7)` x 7 x (10+7)
That is A= 374 square cm
Volume:
Volume of the Cone = `(1)/(3)` p r^2h Cubic units
Therefore Volume =`(1)/(3)`x `(22)/(7)` x 72x6
That is V= 308 Cubic cm
These are the pi and radius problems in math.
Pi is the important symbol in math. Radius is the measure that is mainly used in circles. Pi and radius are the terms that are mostly used in sphere, cone, and cylinder. Because these figures are the combination of circle shapes. In this article we have to discuss about “Pi and radius math examples”.
Radius: radius is the distance between the center to the point on the circle shapes.
pi: it is constant term, the value is 3.14 or `22/7 `
Brief Description of Pi and Radius Math Examples
Example 1:
Find the area and circumference of the circle whose radius is equal to 7 cm.
Solution:
Given radius is equal to 7cm.
Area:
Area of the circle = p r^2 square units
Pi is represented by the symbol p = `(22)/(7)` or 3.14 and r= 7 cm
Therefore area = `(22)/(7)` x 7 x 7
That is A= 154 square cm
Perimeter:
Perimeter of the circle = 2 p r square units
Therefore area =2x `(22)/(7)` x 7
That is A= 44 cm
Example 2:
Find the area and volume of the sphere whose radius is equal to 7 cm.
Solution:
Given radius is equal to 7cm.
Area:
Area of the Sphere = 4 p r^2 square units
Pi is represented by the symbol p = `(22)/(7)` or 3.14 and r= 7 cm
Therefore area = 4 x `(22)/(7)` x 7 x 7
That is A= 616 square cm
Volume:
Volume of the Sphere = `(4)/(3)` p r 3Cubic units
Therefore Volume =`(4)/(3)` x `(22)/(7)` x 73
That is V= 1437.3 Cubic cm
Please express your views of this topic formula to calculate percentage by commenting on blog.
Example 3:
Find the area and volume of the cone whose radius is equal to 7 cm and slant height is equal to 10 cm and height is equal to 6 cm.
Solution:
Given radius is equal to 7 cm and slant height is equal to 10 cm and height is 6 cm.
Area:
Area of the Cone = p r (l + r) square units
Pi is represented by the symbol p = `(22)/(7)` or 3.14 and r= 7 cm and l= 10 cm
Therefore area = `(22)/(7)` x 7 x (10+7)
That is A= 374 square cm
Volume:
Volume of the Cone = `(1)/(3)` p r^2h Cubic units
Therefore Volume =`(1)/(3)`x `(22)/(7)` x 72x6
That is V= 308 Cubic cm
These are the pi and radius problems in math.
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