Seriously need on these two: (1. cylinder a has a radius of 1 m and height of 4m cylinder b has a radius of 1 m and height of 8m what is the ratio of the volume of cylinder a to the volume of cylinder ba. 1: 2b. 2: 1c. 1: 1d. 1: 4 2. what is the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters? round your answer to the nearest square meter. a. 3,028m^2b.3971m^2c.1,357m^2 d. 1,671m^2

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.