If you need to fill a cylinder with liquid to clean your house and the cylinder measure
height=10 in
diameter =6 in
a) 28.26 cubic inches
b)282.6 cubic inches
c)282.6 inches
it’s (b) but i just don’t understand how to get it.

The reason why it's ”b” is because of the formula for the volume of a cylinder, which is πr^2*h.
Diameter is just 2 times the radius so the equation should look like this: π3^2*10

Simplifying into terms of pi, the equation should read 90π.

Multiplying 90 by pi to the first two decimal places, it should be around the same answer as option ”b”.

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1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post