Home > Geometry > Perimeter and Area of Non-Standard Shapes

How do you find the surface area of the sphere in terms #pi# given #S=4pir^2# and r= 1.2 ft?

Answer 1

Evelyn Arboleda

#S=5.76(pi)# square feet

Plug in 1.2 for r.

#S=4(pi)(1.2)^2#

#S=4(pi)(1.44)#

#S=5.76(pi)# square feet

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Theodore Abad

To find the surface area of a sphere in terms of π given the formula ( S = 4πr^2 ) and a radius ( r = 1.2 ) ft, you simply substitute the value of the radius into the formula and simplify.

Substitute ( r = 1.2 ) into the formula:

( S = 4π(1.2)^2 )

( S = 4π(1.44) )

( S = 5.76π )

Therefore, the surface area of the sphere is ( 5.76π ) square feet.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.