cylindrical Is half full of oil The cylinder Has a base radius of 100 cm The height of the cylinder 250cm 1 litres = 1000cm3 How many litres of oil are in the tank?

Volume of a cylinder can be calculated using below formula

V=π r^2 h

Where r= radius

h= height

radius = 100 cm

h=250cm

But the cylinder is half filled, then the formula becomes

V=(π r^2 h) × 1/2

Then substitute the values we have

V=( π × 100^2 ×250) × 1/2

V=3926990 cm^3

But 1 litres = 1000cm3

Then V=(3926990 cm^3)/ 1000

V=3926.99 liters

4 0

2 years ago

I need to collect 30 stickers. Each bag of crisps contains 3 stickers. How many bags will I need to buy?

soldier1979 [14.2K]

Hey there :)

Let p represent the number of bags to be bought

We need to collect 30 stickers and each bag has 3 stickers

3p = 30
↑ ↑
Number of stickers in a bad Number of stickers to be collected

$\frac{3p}{3}$ = $\frac{30}{3}$
p = 10

We need to buy 10 bags of crisps to have 30 stickers

5 0

3 years ago

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