I can't quite figure out the second question of this frq. This is Unit 8 AP Calculus BC- Applications of integration.

1O The & Free Response: Answer all questions using correct notation and justifications. . No Calculators Allowed L y ict T i - X Let R be the region in the first quadrant enclosed by the graph of f(x) = J/cos x, the graph of g(x) = . and b4 . the vertical line x = =, as shown in the figure above \\/m) Write. but do not evaluate, an integral expression that gives the area of R. - s - J (7Y - (rcomx)) d 6 - ) Find the volume of the solid generated when R is revolved about the x-axis. i " . | (- @ dx AT et | v Z 2 b CONK A\\L o1 3 e z X % ._TT__.,e' s I = _."I 7 Z C a [%;'%m x'j? T [ 02 () 5-'\\/\\(%)}"\"[,&; +M(o)'] ': 2z '/() Region R is the base of a solid whose cross sections perpendicular to the x-axis are semicircles with " 2 diameters on the xy-plane. Write, but do not evaluate, an integral expression that giv s the volume of this 'g - % ()-(ex)) dx 0