20 point plus brainlest whoever answer first and get it right

4√(64b) ^ 3

The 4 is the root   not multiplied

Step-by-step explanation:

The 64b is inside the radical

The 4 is the root we are taking so it goes on the left of the radical

We are raising 64b to the third power so it is the exponent to the right

4√(64b) ^ 3

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.