A ball gas a radius of 56mm
(a)Calculate the surface area
(b)What is the volume of the sphere
Part A
a = 4*pi*r^2
= 4*pi*56^2
answer will be in mm^2
Part B
v= (4/3)*pi*r^3
= (4/3)*pi*(56^3)
answer will be in mm^3
i don't kno lol could u help give me answer?
To calculate the surface area of a sphere, you can use the formula:
Surface Area = 4πr^2
Where "r" is the radius of the sphere.
(a) Calculate the surface area:
Given that the radius of the ball is 56 mm, substitute this value into the formula:
Surface Area = 4π(56)^2
To find the value of "π" (pi), you can use the approximate value of 3.14 or more accurate value, such as 3.14159.
Using 3.14 for pi, the calculation becomes:
Surface Area = 4 * 3.14 * (56)^2
Simplifying this expression:
Surface Area = 4 * 3.14 * 3136
Surface Area = 43982.24 square millimeters
Therefore, the surface area of the ball is 43982.24 square millimeters.
(b) To calculate the volume of a sphere, you can use the formula:
Volume = (4/3) * π * r^3
Where "r" is the radius of the sphere.
(b) Calculate the volume:
Given that the radius of the ball is 56 mm, substitute this value into the formula:
Volume = (4/3) * π * (56)^3
Using the value of pi as 3.14, the calculation becomes:
Volume = (4/3) * 3.14 * (56)^3
Simplifying this expression:
Volume = (4/3) * 3.14 * 175616
Volume = 1.333 * 3.14 * 175616
Volume = 370529.856 cubic millimeters
Therefore, the volume of the sphere is 370529.856 cubic millimeters.