For the function given below, nd a formula for the Riemann sum obtained by dividing the interval [0.30] into n equal subintervals and using the right-hand endpoint for each ck. Then take a limit of this sum as n > co to calculate the area under the curve over [0,30]. f(x) = 900 x2 (3 Write a formula for a Riemann sum for the function f(x) = 900 - x2 over the interval [0,30]. 1 l 8n = E (Type an expression using n as the variable.) l l l The area under the curve over [0,30] is '1 square units. l (Simplify your answer.)