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Given: Circle diameter 4
Sought Area of circle Pi * r2 =A (Pi = 3.14159...)
r = d/2 >> r = 2
r2 = 4
3.14159 * 4 = 12,56636...
With four significant figures (which is three greater than the diameter of the problem and therefore too great). 12,57 square meters (the diameter should have been written 4,000 for this to be true)
With a single significant figure (like the resolution of the diameter in the problem): 1 * 10 m2 (had to write it that way so that there would be no confusion as to trailing zeros being significant or not)
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What is the area of a circle with a diameter of 8 meters use 3.14 for?
The radius of the circle is half of the diameter, so it is 4 meters. To find the area of the circle, we can use the formula A = πr^2. Substituting the value of the radius, the area of the circle is therefore A = 3.14 * (4)^2 = 3.14 * 16 = 50.24 square meters.
What is the area of a circle if the diameter is 6 meters?
Area = 1/4*Pi*d2 = 0.25*3.14*62 = about 28.26m2
What is the area of a circle if the diameter is 4 cm in hectometers?
The area of a circle (in square hectometers) if the diameter is 4 cm is: 0.001257 hectometers2
What is the area of a circle with a diameter of 24 meters use 3.14?
Area = 1/4*Pi*d2 = 0.25*3.14*242 = about 452.16m2
What is the surface area of a cylinder with a height of 10 meters and diameter of 4 meters?
A cylinder with a height of 10 meters and diameter of 4 meters has a surface area of 150.8m2
