A cylindrical metal pipe has a diameter of 20 millimeters and a height of 21 millimeters. A cylindrical hole cut out of
the center has a radius of 6 millimeters,
Which expressions represent the volume of metal needed,
in cubic millimeters, to make the pipe? Select two options,
219(1092 - 217(6
(20)(21) -(6)
20 mm
21 mm
2,100% 7567
7,64431
6 mm
1,344

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.