Area of Circles and Semicircles
Find the area of a circle with a radius of 5 cm.
A = 78.5cm2
Find the circumference of a circle with a radius of 6 cm
C = 37.68cm
A circular garden has a radius of 10 meters. What is the area of the garden? If a semicircular pond with the same radius is placed within the garden, what is the area of the remaining garden space?
Area of garden = 314m2
Area of pond = 157m2
Remaining garden = 157m2
Find the circumference of a semicircle with a radius of 7 cm.
C = 35.98cm
A rectangle has a length of 12 cm and width of 8 cm with a semicircle attached to one of the shorter ends. Find the perimeter.
P = 32 + 12.56
=44.56cm
Determine the area of a circle with a radius of 9 m
A=254.34m2
Calculate the circumference for a circle with a radius of 11 cm
C = 69.08cm
A circular fountain has a diameter of 6 meters. How much fencing is needed to go around the fountain if a semicircular seating area is added? What is the total fencing required?
Fencing for fountain = 18.84m
Total fencing = 28.26m
Calculate the circumference for a semicircle with a diameter of 16 cm
C = 41.12cm
A square with a side length of 10 m has a semicircle attached to one side. Find the perimeter.
P = 30 + 15.7
=45.7m
What is the area of a circle with a radius of 2.5 ft
A = 19.63ft2
Calculate the circumference for a circle with a diameter of 20 cm
C = 62.8cm
A playground is in the shape of a rectangle 30 meters long and 20 meters wide with a semicircular sandbox attached to one of the shorter sides. What is the perimeter of the playground?
Perimeter = 111.4m
Determine the circumference of a semicircle with a radius of 9 m
C = 46.26m
A triangle with sides 3 m, 4 m, and 5 m has a semicircle with a diameter equal to the longest side attached. Find the perimeter.
P = 7 + 7.85
=14.85m
Determine the area of a semicircle with a radius of 6 m
A = 56.52m2
What is the circumference of a circle with a radius of 4.5 ft
C = 28.26ft
A circular track has a circumference of 50 meters. What is the radius of the track?
Radius = 7.96m
What is the circumference of a semicircle with a radius of 5 ft
C = 25.7ft
A rectangle with a length of 15 ft and width of 10 ft has a semicircle attached to one of the shorter ends. Find the perimeter.
P = 40 + 15.7
=55.7ft
Find the area of a semicircle with a diameter of 22 in
A = 189.97in2
Find the circumference of a circle with a diameter of 25 in.
C = 78.5in
A rectangular field 40 meters by 25 meters is being enclosed with a fence. If a semicircular area is added to one of the shorter side, what is the total length of the fence needed?
Total fencing = 105+ 39.25=144.25m
Find the circumference of a semicircle with a diameter of 26 in
C = 66.82in
A rectangle with a length of 20 m and width of 5 m has a semicircle attached to one of the longer ends. Find the perimeter.
P = 30 + 31.4
=61.4m