Question

It's my test paper that I have tagged for revision. Please answer

Answer 1

1.sin45=1/√2
2.a. m1=m2
3. 4πr×r
4. 0
5. 47.5
6. tanA=1/√3=tan30
or A=30°
7. m=1/(-1)= -1
8.csa =2πrh
9.P=2/6=1/3
10.let mean= a
SD/a×100=40(C.V.)
2/a=4/10
a=5
hence mean=5