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Mathematics 18 Online
OpenStudy (joshuacs):

WILL FAN AND MEDAL!!!!!! In the figure, the radius of the partial circle with center A is 4 feet. The perimeter of the figure is _____ feet, and the area of the figure is _____ square feet. Assume π = 3.14, and round your answers to the nearest hundredth.

OpenStudy (joshuacs):

OpenStudy (joshuacs):

@triciaal help please

OpenStudy (amorfide):

if r=4 since AC is a line that goes from the centre to the edge of the circle, AC is length r since AB also is a line that goes from the centre to the edge of the circle, AB is length r r=4 so you have |dw:1479498296666:dw| use pythagoras to get the length of that side now you know the perimeter of a circle is the circumference C=2pi(r) this is of an entire circle, now we want to take away the arc length that we are missing Arc length=2rPi(x/360) where x is the angle which is 90 since it is a right angle now we want the circumference-arc length+length of the side using pthagoras to get the perimeter area of a circle is A=Pi(r^2) you will want to take away the area of the missing sector so try to work through it step by step and I will guide you or correct you

OpenStudy (triciaal):

follow the directions given above

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