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Which equation could be used to find the area in square inches of a circle with a radius of 8 inches?
Area = (radius)2 x pi Area = 82 x pi Area = 64 x pi Area ≈ 201.06 square inches
What is the area of a circle that has a radius of 8 meters?
The formula for the area of a circle is A = pi*r2, where r is the radius of the circle. So, plugging r = 8m into the formula gives: A = pi*82 = pi*64 This is approximately 201.06193 square meters.
What is the area of a sector with a radius of 8 and an arc of 290 degrees?
Area of the circle = pi*82 = 201.0619298 square units Area of the sector = 290/360 of 201.0619298 = 161.9665546 or about 162 square units
What is the area of the shaded sector if the circle has a radius of 8 and the central angle is 100 degrees?
Assuming the shaded sector has the angle of 100o (without seeing the diagram, it could be the other sector, ie the one with an angle of 260o): The sector is 1000 ÷ 360o = 5/18 of the circle. Thus its area is 5/18 that of the circle: area = 5/18 x π x 82 ~= 55.9 units2
What is the equation for a circle centered at -1 -2 and has a radius of 8?
(x + 1)2 + (y + 2)2 = 82(x + 1)2 + (y + 2)2 = 82(x + 1)2 + (y + 2)2 = 82(x + 1)2 + (y + 2)2 = 82
