表达式10: "V" equals pi left parenthesis, StartFraction, 4 "x" squared Over 2 , EndFraction , right parenthesis "o" "n" left parenthesis, 0 , 8 , right parenthesis .... "V" equals pi left parenthesis, 2 "x" squared , right parenthesis "o" "n" left parenthesis, 0 , 8 , right parenthesisV=π4x22on0,8....V=π2x2on0,8
10
表达式11: "V" equals left parenthesis, pi times 2 times 8 squared , right parenthesis minus 0V=π·2·82−0
equals=
402.1 2 3 8 5 9 6 5 9402.123859659
11
Question 4
12
表达式13: "b" equals 2 StartRoot, 8 , EndRootb=28
equals=
5.6 5 6 8 5 4 2 4 9 4 95.65685424949
13
表达式14: "V" equals pi Start integral from 0 to 2 StartRoot, 8 , EndRoot , end integral, left parenthesis, 9 squared minus left parenthesis, left parenthesis, StartFraction, "y" Over 2 , EndFraction , right parenthesis squared plus 1 , right parenthesis squared , right parenthesis "d" "y"V=π∫28092−y22+12dy
equals=
1099.4 6 5 4 3 1 11099.4654311
14
Question 5
15
表达式16: "V" equals pi Start integral from 0 to 8, end integral, left parenthesis, left parenthesis, 2 StartRoot, "x" , EndRoot plus 1 , right parenthesis squared minus left parenthesis, 1 , right parenthesis squared , right parenthesis "d" "x"V=π∫802x+12−12dx
equals=
591.6 8 6 8 6 5 0 2 1591.686865021
16
Question 6C
17
表达式18: "V" equals Start integral from 0 to 1, end integral, 2 left parenthesis, left parenthesis, StartFraction, "y" Over 4 , EndFraction , right parenthesis squared , right parenthesis squared "d" "y"V=∫102y422dy
equals=
0.0 0 1 5 6 2 50.0015625
18
A=2b*b=2b^2, where b=(y/4)^2
19
表达式20: "A" equals 2 left parenthesis, left parenthesis, StartFraction, "y" Over 4 , EndFraction , right parenthesis squared , right parenthesis squaredA=2y422
