Question 1Difficulty: Exam-style questionMultiple choice questionThe diagram shows a circle with a shaded sector.Find the length of arc, AB. 𝜋4 9𝜋4 9𝜋2

The circle below has center O, and its radius is 5ft. Given that =m∠AOB70°, find the area of the shaded region and the length of the arc AB.Give exact answers in terms of π, and be sure to include the correct units in your answer.

In circle JJ, mangle, K, J, L, equals, 160, degrees∠KJL=160 ∘ and the area of shaded sector = start fraction, 16, divided by, 9, end fraction, pi 916​ π. Find the length of arc, K, L KL⌢ . Express your answer as a fraction times piπ.

In circle UU, mangle, V, U, W, equals, 20, degrees∠VUW=20 ∘ and the area of shaded sector = start fraction, 25, divided by, 18, end fraction, pi 1825​ π. Find the length of arc, V, W VW⌢ . Express your answer as a fraction times piπ.

Question 4Difficulty: Exam-style questionMultiple choice questionFind the area of the shaded region in this figure.101.8 cm2157.1 cm2259 cm246.3 cm2

In circle BB, B, C, equals, 9BC=9 and the area of shaded sector = 9, pi9π. Find the length of arc, C, E, D CED⌢ . Express your answer as a fraction times piπ.