3.4 cm to 3 dp.
Area = pi*6.42 = 128.679 square cm to 3 dp
Area = pi*72 = 153.938 square cm to 3 decimal places
Area = pi*0.72 = 1.539 square cm to 3 decimal places
area = pi*31.52 = 3117.245 square cm to 3 decimal places
Area of circle: 36*pi = 113.097 square cm to 3 decimal places
3.4 cm to 3 dp.
Area = pi*52 = 78.539 square cm to 3 dp
Area = pi*6.42 = 128.679 square cm to 3 dp
Area of circle: pi*1.5^2 = 7.069 square cm rounded to three decimal places
Area = pi*72 = 153.938 square cm to 3 decimal places
Area = pi*0.72 = 1.539 square cm to 3 decimal places
area = pi*31.52 = 3117.245 square cm to 3 decimal places
The area of a circle's formula is pi (3.14) r squared. The radius is half the diameter, so 1.5. 7.065 is the answer.
Area: pi*3.12 = 30.191 square cm rounded to 3 decimal places
Area of a circle = pi x (radius)2And radius = diameter / 2 = 3/2 = 1.5So, area = pi x (1.5)2 = 7.06858347 cm2
The area of a 3 cm circle is: 7.069 square cm