The longest side is 5/(5+3+4) = 5/12 of the perimeter, hence
(5/12)*156 cm = 65 cm . . . . . the length of the longest side
Just substitute in the number 3 for x then subtract 3 at both sides and youll have y=7
If you have several different sized pizzas, you can compare their areas. So the area of a pizza is the length of the crust (circumference) divided by two times the distance from the edge to the middle (radius). Mathematicians use a special number called pi to calculate the circumference of a circle.
not riding a motor cycle given that they read
--------------------------------------------------------
reading
5
----
12
.41666666666
rounding to the nearest hundredth
.42
