Hollow spheres with a radius of 8 cm whose shell is 2.5 cm thick. About how much chocolate will go into making wash sphere?

About chocolate will go into making wash sphere .

Step-by-step explanation:

Here we have , Hollow spheres with a radius of 8 cm whose shell is 2.5 cm thick.  We need to find  About how much chocolate will go into making wash sphere .Let's find out:

Basically we need to find the volume of hollow sphere , We know that volume of hollow sphere is :

⇒            .............(1)

According to question ,

Putting these values in equation (1) :

⇒

⇒

⇒

⇒

Therefore , About chocolate will go into making wash sphere .

2080 cm³ (correct to 3sf)

Step-by-step explanation:

Volume = (4/3) × 3.14 × [8³ - 2.5³]

= 2078.156667 cm³

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1