Question

A paint can holds 2.5 litres =2,500 cm3

Answer 1

Answer:7.3cm

Step-by-step explanation:

Volume=2500

π=3.14

volume of cylinder=πxr^2xh

2500=3.14xr^2x15

2500=47.1xr^2

r^2=2500/47.1

r^2=53.8

r=√(53.8)

r=7.3

Answer 2

Answer:

The radius of the can is 7.28 cm .

Step-by-step explanation:

By our general knowledge, a "can" is a cylinder. It is given that the volume of can is 2500 cm³ and the height is 15 cm tall so we have to use the formula of volume of cylinder to find the radius :

$v = \pi {r}^{2} h$

Let r be radius, v be volume and h be height,

Let v = 2500 cm³,

Let h = 15 cm,

$2500 = \pi \times {r}^{2} \times 15$

$\pi \times {r}^{2} = 2500 \div 15$

$\pi \times {r}^{2} = \frac{500}{3}$

${r}^{2} = \frac{500}{3\pi}$

$r = \sqrt{ \frac{500}{3\pi} }$

$r = 7.28 \: cm \: (3s.f)$