Q: If a circle has an area of 400 cm find the radius to the nearest tenth?

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If I remember correctly Area of a circle is... PIE multiplied by the RADIUS squared. If this is so.... 15 is the radius and... The sum of 15 x 15 should be multiplied by pie (3.1415 or what ever it is). Use a calculator to get to the nearest tenth.

The area of a circle (to the nearest hundredth) with a 5-unit radius is: 78.54 square units.

7.1 cm2

B.50.27

113 (Nearest Whole Number)

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Radius is the square root of (71/pi) = 4.8 feet rounded to the nearest tenth

10.1 inches

The circumference of a circle with radius of 7 km is 44.0 km (to the nearest tenth), and the area of a circle with radius of 7 km is 153.9 km (to the nearest tenth).C = 2 pi RA = pi R2

Using 3.14 as Pi the area of circle is: 12.56

The area of the circle would be 483.1 units squared.

47.1

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Area of whole circle = pi*r2 = 64*pi Area of Sector = Area of Whole Circle * Angle of Sector/Angle of Whole Circle = Area of Whole Circle * 120/360 = Area of Whole Circle / 3 = 64*pi/3 = 67.0 to the nearest tenth.

Area of a circle = (pi) x (radius)2 = (pi) x (4)2 = 16 pi = 50.3 in2 (rounded)

If I remember correctly Area of a circle is... PIE multiplied by the RADIUS squared. If this is so.... 15 is the radius and... The sum of 15 x 15 should be multiplied by pie (3.1415 or what ever it is). Use a calculator to get to the nearest tenth.

The area of a circle (to the nearest hundredth) with a 5-unit radius is: 78.54 square units.