5xr? 240 A= 3 r [You are not asked to verify this, so do not attempt to do so.] 2.1 Using calculus, show that the single

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5xr 240 A 3 R You Are Not Asked To Verify This So Do Not Attempt To Do So 2 1 Using Calculus Show That The Single 1 (32.64 KiB) Viewed 30 times

5xr? 240 A= 3 r [You are not asked to verify this, so do not attempt to do so.] 2.1 Using calculus, show that the single value ofr for which the function A has a stationary point satisfies the equation - 72 Hence, determine this value of r. 71 2.2 Again using calculus, verify that the value of rin 2.1 results in the total surface area being minimised. Further, calculate this minimum total surface area. ten