What is the surface area of sphere with radius 13 ft?
676π ft2
2704π ft2
208π ft2
52π ft2

Surface area of a sphere=

Step-by-step explanation:

the surface area of sphere with radius 13 ft

Surface area of a sphere formula is

Where 'r' is the radius of the sphere

r= 13 ft

plug in the radius and find surface area

Surface area of a sphere =

=

= square feet

The Amount which will be pay back to bank in 2 years is $4867.2  

Step-by-step explanation:

Given as :

The principal borrow from account = $4500

The rate of interest applied = 4 %

The Time period of loan = 2 years

Let The amount pay back to the bank = A

From Compounded method

Amount = Principal ×

Or, Amount = $4500 ×

Or, Amount = $4500 × ( 1.04 )²

So, Amount = $4500 × 1.0816

∴    Amount = $4867.2

Hence The Amount which will be pay back to bank in 2 years is $4867.2  Answer