d = 2 Dep on M2 in (a) M1 = 625 Accept M1 dep d = 25 A1 [7] M10. (a) (0, 1) Generally marked B1 (b) Matching any (non zero for x) Values eg, a1 = 3, a2 = 9, etc Must show as power M1 a = 3 A1 [3] Volume of one (or two) spheres M11. Allow 10 for r for M1 M1 = 523.6 (1047.2) {524} {1048, 1050} oe 500π/3 or 1000π/3 (523.3 to 523.7) or (1046.6 to 1047.4) A1 Volume of cylinder Allow 10 for h or 10 for r for M1 (not both) M1
d 2 = Dep on M2 in (a) M1 = 625 Accept M1 dep d = 25 A1 [7] M10. (a) (0, 1) Generally marked B1 (b) Matching any (non zero for x) Values eg, a1 = 3, a2 = 9, etc Must show as power M1 a = 3 A1 [3] M11. Volume of one (or two) spheres Allow 10 for r for M1 M1 = 523.6 (1047.2) {524} {1048, 1050} oe 500π/3 or 1000π/3 (523.3 to 523.7) or (1046.6 to 1047.4) A1 Volume of cylinder Allow 10 for h or 10 for r for M1 (not both) M1
AllUnit3QnsandmarkschemeWordversion.docx