Radius/Diameter
Radius = 12.35 in Diameter =?
24.70 in
Give the two formulas for circumference.
c=2*pi*r AND c=pi*d
A=pi*r2
A small dinner plate has a diameter of 4 inches. What is the area the plate takes up on the table?
12.57 in2
Round to the nearest tenth.
56.552
56.6
Diameter = 48.9 cm Radius = ?
24.45 cm
Radius = 10.2 in Circumference = ?
64.09 in
Radius = 38 in Area = ?
4536.46 in2
125.66 in
Round to the nearest hundredth.
123.635
123.64
From the center to the edge of the circle is 98 in. How far is it all the way across the circle?
196 in
Diameter = 14.01 ft Circumference = ?
44.01 ft
Diameter = 19 yds Area = ?
283.53 yds2
A forest ranger measures the diameter of a fallen tree to be 67 cm across. What is the distance around that section of the tree?
210.49 cm
Round to the nearest hundredth.
65.031
65.03
The distance across the circle is 107.88 m. How far is it from the center to the edge?
53.94 m
Circumference = 53.41 km Diameter = ?
17 km
Diameter = 56 mm Area = ?
2463.01 mm2
A large pizza has a diameter of 15 inches. How much space does it take up in the box?
176.71 in2
Round to the nearest hundredth.
88.997
89.0
If the radius is 8x what is the diameter?
16x
Circumference = 138.24 mm Radius = ?
22 mm
Area = 113.10 mm2 Radius = ?
6 mm
A circular table has a diameter of 14 inches. How much space does the tabletop have?
153.94 in2
Round to the nearest hundredth.
325.222
325.22