Find the area of the green shaded portion of the circle with a given radius of 9 units. Use pi = 3.14 diagram show green shaded area with a given radius of 9 and an orange area with angles of 100 degrees, can anyone help
20.42 units squared
.65 units squared
7.85 units squared
183.69 units squared
2007-07-30 11:30:09 · 3 answers · asked by sockless_1 1 in Science & Mathematics ➔ Mathematics
If the orange area is 100deg and the green area is the rest of the circle, then the green area is 260deg, and its area is:
260*3.14*9^2 / 360
= 183.69 units squared.
2007-07-30 11:36:44 · answer #1 · answered by Anonymous · 0⤊ 0⤋
If I'm reading the question right, it's the 183.69 units.
Area of a circle = pi x radius^2
Area of entire circle = 3.14 x 9^2 = 254.34
If the area of the orange part is 100 degrees, the area of the green part is 360 - 100 = 260 degrees or 72.2% of the circle's area.
254 x .722 = about 183
2007-07-30 18:41:48 · answer #2 · answered by Paul in San Diego 7 · 0⤊ 0⤋
183.69
260/360 x 3.14 x 9 x 9
2007-07-30 18:34:20 · answer #3 · answered by Dave 2 · 0⤊ 0⤋