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5,000 i got it right on my homework two days ago!

Formulae needed:

- area_circle = π x radius2
- radius = diameter ÷ 2
- circumference = 2 x π x radius ⇒ radius = circumference ÷ (2 x π)

What do you mean by a 100 mm circle?

- Radius = 100 mm

= π x (100 mm)2

= 10000π mm2

≈ 31415.93 mm2

- Diameter = 100 mm

= 100 mm ÷ 2

= 50 mm

area = π x radius2

= π x (50 mm)2

= 2500π mm2

≈ 7853.98 mm2

- Circumference = 100 mm

= 100 mm ÷ (2 x π)

= 50/π mm

area = π x radius2

= π x (50/π mm)2

= 2500/π mm2

≈ 795.77 mm2

Q: What is the area of an 100mm circle?

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Area of a circle = Pi * radius2

the area of the circle is increased by 400%

Area of a circle = pi*radius2

The area of a 3 cm circle is: 7.069 square cm

all you do is find the area of the circle... if you mean find the squares area, find the area of the circle, and then the square's area and subtract the squares area to the circles area

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Area = pi*502

Area = pi*502 in square mm

The answer is given in the question: 100mm

The circumference of a circle with a diameter of 31.8mm is about 100mm (99.990265mm)

100mm is 10cm

100MM X 100MM X 100MM IS EQUAL OF 1 Q cm

Area of a circle = pi*radius2

Not clear which area you want. The surface area of the cylinder can only be determined if you give the length of the cylinder as well as its diameter. As you don't give this I conclude you want the area of the ends only. Each end will be the difference between the area of the 100 mm circle and the 30 mm circle. 100 mm diameter area = 7855 sq mm. 30 mm diameter area = 707 sq mm. Therefore area of end = 7148 sq mm, and you have two ends so total = 14296 sq mm

Area of a circle = Pi * radius2

Area of a circle = pi*radius2

Area of a circle is calculated by A=2*p*r where A represents the circle's area and r is the radius of the circle.

The area of a circle is the amount of space inside the circle. The area of a circle is calculated by multiplying pi(3.14159) by the radius squared.