Question

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?

Answer 1

2080 cm³ (correct to 3sf)

Explanation:

Volume = (4/3) × 3.14 × [8³ - 2.5³]

= 2078.156667 cm³

Answer 2

About
`2078.20cm^3` chocolate will go into making wash sphere .

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 :

⇒
`Volume = (4\pi )/(3)(r_1^3-r_2^3)` .............(1)

According to question ,

`r_1=8cm\\r_2=2.5cm`

Putting these values in equation (1) :

⇒
`Volume = (4\pi )/(3)(8^3-2.5^3)`

⇒
`Volume = (4\pi )/(3)(496.38)`

⇒
`Volume = (4(3.14) )/(3)(496.38)`

⇒
`Volume =2078.20cm^3`

Therefore , About
`2078.20cm^3` chocolate will go into making wash sphere .