Question

Can someone please help me with this.

Answer 1

V=πr²h/3

V4,3= 50.27

V2,12= 150.80

V3,10= 94.25

9. F is correct.

10. A= 4/3πr³

A=4/3(3.14)(7inch)³= 1436.03 inch³

11.
(w+7)+(-5)

w+(7-5)

(w+2)

So A is a correct simplification (w+2)

12. V=πr²h

V=(3.14)(8in)²(7inch)= 1406.72 inch³