Hi I am having trouble figuring out how to make this come out correctly. every time I try it tells me it's incorrect. Could you help explain to me how to do the problem in the pictures attached?

ED I) E] Bsnhumobiuscloud C, [:1 + \"w msomneru. "e"&\"'&\"'&7si '26 as a a a a a a a a (as as a a a a a a a a a a a a was was: The height of the cylinder is 8 inches. We'll be analyzing the surface area of a round cylinder - in other words the amount of material needed to "make a can". A cylinder (round can) has a circular base and a circular top with vertical sides in between. Let 'r be the radius of the top of the can and let h be the height. The surface area of the cylinder, A, is A = 21r'r2 + 21r'rh (it's two circles for the top and bottom plus a rolled up rectangle for the side). r= radius Areas = 1: r3: h = height Area = h(27rr) . I: ................... Circumference 2m Part a: Assume that the height of your cylinder is 8 inches. Consider A as a function of 'r, so we can write that as A (r) = 2 1rr2 + 16 1rr'. What is the domain of A (1')? In other words, for which values of r is A (7') dened? Quit&Save Previous Unit Item snhu.mobius.cloud C + MI m Souther... B Part b: Continue to assume that the height of your cylinder is 8 inches. Write the radius r as a function of A. This is the inverse function to A (r) , i.e to turn A as a function of r into. r as a function of A. sin (a) OO a r A = Hints: . To calculate an inverse function, you need to solve for r. Here you would start with A = 2 mr + 16 mr. This equation is the same as 2 wr + 16 ar - A = 0 which is a quadratic equation in the variable r, and you can solve that using the quadratic formula. . If you want to type in 3 7+1 in Mobius, in text mode you can type in (3*pi+1)/(x+1). There is more information in the Introduction to Mobius unit. Part c: If the surface area is 175 square inches, then what is the rardius r? In other words, evaluate r (175) . Round your answer to 2 decimal places. Hint: To compute a numeric square root such as v17.3, you could . Use a spreadsheet such as Microsoft Excel or OpenOffice Calc and type in =sqrt(17.3) - Too a browser to sonnant to the Internet and tuna in cart(17 2) into a conrah field Save Quit & Save Previous Unit Item Next Unit Item Previous Page Next PageED m Southen. E E snhu.mobius.cloud O Hints: 0 To calculate an inverse function, you need to solve for 1'. Here you would start with A = 2 7r7'2 + 16 7r1'. This equation is the same as 2 1W2 + 16 7r'r A = 0 which is a quadratic equation in the variable 7', and you can solve that using the quadratic formula. 3:135:11 in Mobius, in text mode you can type in (3*pi+1)/(x+1). There is more information in the Introduction to Mobius unit. - If you want to type in Part c: If the surface area is 17 5 square inches, then what is the rardius r? In other words, evaluate r (175) . Round your answer to 2 decimal places. Hint: To compute a numeric square root such as N/ 17.3 , you could 0 Use a spreadsheet such as Microsoft Excel or OpenOffice Calc and type in =sqrt(17.3) 0 Use a browser to connect to the Internet and type in sqrt(17.3) into a search eld 0 Use a calculator The radius is Number ' inches if the surface area is 175 square inches. How Did I Do? Try Another Quit & Save Previous Unit Item 6 + [e