V=1/3pie r^2 hail was for r I’ll give you 30 points

r = √3v/π

Step-by-step explanation:

in order to make r the subject of formulae from

v = 1/3πr²

multiply through by 3

3(v) = 3 ( πr²/3)

3v = πr²

divide both sides by π

3v/π =πr²/π

3v/π= r²

in order to make r stand out we would do that by squaring both sides

r = √3v/π

because 1.2 isnt half of 6 duh

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.