1. estimate the circumference of the circle with the given radius or diameter use 3.14 round to the nearest unit
24
27-in
78-in
1,809-in <-------
151-in
2. estimate the radius of a circle circumference of 272.2-in. use 3.14 to round to the nearest tenth.
800.0 <-----
Lesson 11: Rectangular Prisms and Volume CE 2015
Math 6 B Unit 3: Geometry and Measurement QUIZ!!! i cant type all the answers and question
is this right?????????
hlp me plssss
3.14 * 24 is around 75
2 pi r = 272.2
r = 44.3
1. To estimate the circumference of a circle, you can use the formula C = 2πr, where C is the circumference and r is the radius. If the radius is given, you can directly substitute it into the formula. If the diameter is given, you can divide it by 2 to find the radius.
Using this information, let's find the circumference for question 1:
a) Radius: 24
C = 2 * 3.14 * 24 = 150.72
Rounded to the nearest unit: 151-in
b) Diameter: 27-in
Radius: 27/2 = 13.5
C = 2 * 3.14 * 13.5 = 84.78
Rounded to the nearest unit: 85-in
c) Radius: 78
C = 2 * 3.14 * 78 = 488.88
Rounded to the nearest unit: 489-in
d) Diameter: 1,809-in
Radius: 1,809/2 = 904.5
C = 2 * 3.14 * 904.5 = 5,686.86
Rounded to the nearest unit: 5,687-in
2. To estimate the radius of a circle, you can use the formula C = 2πr. Rearranging the formula, you get r = C / (2π).
Using this information, let's find the radius for question 2:
Circumference: 272.2-in
r = 272.2 / (2 * 3.14) = 43.36
Rounded to the nearest tenth: 43.4