What's the answer for the two

S Let fir ) =2-xz Estimate the signed area under the curve " for) between r= o and r=2 using four rectangles, right end points 2 - 0 , f(1 ) = / 2 4 I ( 2 + 0 1 = ) Let R be the region enclosed by the curves X= Jy, X= D, yel Ernd the volume by rotating R around y-axis