Nick is making a model of a car to show at his school. the circumference of each wheel is 9.42 inches. what is the diameter of the wheel?

Perimeter = 2 pi r
9.42 = 2 × 22/7 × r
9.42 ×7 / 22 ×2 = r
r = 1.5 inches
Diameter = 2r
= 2× 1.5 =3
Therefore, diameter = 3 inches

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2