18) Quadrilateral ABCD is inscribed in the circle. If m∠A = 95°, what also must be true? Arc Length and Sector Area Write the formulas: Circumference: ________________ Arc Length: ________________________ Area: ___________________ Sector Area: _______________________ Find the arc length and sector area of the following. 19) 20) central angle of 850 and a diameter of 5 cm. Arc Length: _________ Arc Length: _______ Sector Area: _________ Sector Area: _______ 21. The diameter of a pie is 10 in. The pie is 22. An Apple pie has a radius of 4.5in. The cut into 8 slices. What is the arc length of pie is cut into 6 equal pieces. What is the each slice? area of each piece of the pie? 23. A sprinkler has a circular path that sprays 20 ft (the radius of the circle). If the sprinkler is set to a quarter turn, what is the area of the yard that will be watered? 24. The radius of a bike wheel is 12 inches. There are 9 spokes on the wheel. What is the length between each spoke?
18) Quadrilateral ABCD is inscribed in the circle. If m∠A = 95°, what also must be true? Arc Length and Sector Area Write the formulas: Circumference: ________________ Arc Length: ________________________ Area: ___________________ Sector Area: _______________________ Find the arc length and sector area of the following. 19) Arc Length: _________ Sector Area: _________ 20) central angle of 850 and a diameter of 5 cm. Arc Length: _______ Sector Area: _______ 21. The diameter of a pie is 10 in. The pie is cut into 8 slices. What is the arc length of each slice? 22. An Apple pie has a radius of 4.5in. The pie is cut into 6 equal pieces. What is the area of each piece of the pie? 23. A sprinkler has a circular path that sprays 20 ft (the radius of the circle). If the sprinkler is set to a quarter turn, what is the area of the yard that will be watered? 24. The radius of a bike wheel is 12 inches. There are 9 spokes on the wheel. What is the length between each spoke?