Answer:
18
Step-by-step explanation:
3 x 6 = 18
you just need to plug in the value for x
We simplify through bxc^2;
We obtain bc^2;
(4, -5) is the last vertex of the rectangle.
There are four parallel lines. Parallel means there is something going the same direction as it but somewhere else in the shape. If you look at the shape there is four different lines going in the same direction as four others :) (all different directions, though!)
Circumference = 2πr
So the circumference of the track is C = 2π .2 or .4π
3 times around the track is .4π x 3 or 1.2π - this is the answer but most teachers will want you to use 3.14 for pi.
so 1.2 x 3.14 = 3.768 km
Do you notice that I waited until the end to use the actual value of pi (3.14) in my calculations.
Keeping things in pi units until the very end saves time.