Area of a circle = 2pi*r2 = 2pi*(4.2)2 = 110.84
Area of a circle = pi x (radius)2So, if the radius is 4 cm, the area is pi x 42= 50.265 cm2
The radius of a circle with a circumference of 42 meters is about 6.685 meters.
Area = pi*422 = 5541.769 sq inches to 3 d.p.
21 inches.
50.2656 square inches The formula to find the area of a circle is ∏r2. Where ∏ is the mathematical constant and r is the radius of the circle. So 3.14 x 42. = 50.27 square cm or yds, (whatever the diameter was in).
Area of a circle = pi x (radius)2So, if the radius is 4 cm, the area is pi x 42= 50.265 cm2
The radius of a circle if its circumference is 42 is about 6.68
The area of a circle is pi times the square of the radius: A = πr2. For a circle of radius 4, this is π x 42 = π x 16 = 50.265 units squared.A circle with a radius of 4 units has an area of 50.27 square units.
A circle with a radius of 21 yards has an area of 1,385.44 square yards.
The radius of a circle with a circumference of 42 meters is about 6.685 meters.
Area = pi*42 = 50.26548246 or about 50 square cm
The radius of the circle is 21 inches. The area of the circle is (pi) times (radius squared) = pi times 441 = 1,385.44+ square inches. 1 square foot = 144 square inches. The area of the circle is (1385.44+ square inches) divided by 144 = 9.621 square feet (rounded to 3 decimal places).
A circle with a radius of 42 feet has a circumference of 263.89 feet.
Area = pi*422 = 5541.769 sq inches to 3 d.p.
PIE r squared 3.142 X 42 = 50.24
If the radius is 42 meters, then you already know the radius.
Radius = 42/(2*pi) = 6.68450761 Area = pi*6.684507612 = 140.375 square units rounded to 3 decimal places