The brick fire ring measures sixteen feet across the center. What is the circumference of the fire ring to the nearest tenth?
Plan:
Calculations:

50.3 ft

Step-by-step explanation:

circumference = 2nr

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

radius = 16/2 = 8

2 x 22/7 x 8 = 50.3ft

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

a. the residual plot for model 1 has a random pattern and is a good fit for the data.