1 cubic metre of concrete had a weight of 240 kg. 15% of the concrete is water. The rest of the ingredients of concrete are cement, sand and stone.
The weights of these ingredients are in the ratio 1:2:5
work out the weight of the cement, sand and stone in 1 cubic metre of concrete.

please please help i really need it done

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

its line 2 i just added the rest or else it wouldn't let me answer

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!