6 cm 5 cm 3 сm 6 cm Volume = cm^3

A filter removes 75% of the impurities of water that is passes throught it. Multiple filters can be used together to increase the purity of the water. This situation is represented by A=0.25^N, where A is the proportion of impurities remaining and n is the number of filters used. What proportion of impurities remians when four filters are used, to the nearest ten thousandth? Explain

The cost of fencing a circular field at the rate $24 per meter is $5280. The field is to be ploughed at the rate of $0.50 per m^2. Find the cost of ploughing the field.

Convert 32 ft^2 to cubic inches .