1. EXAMPLE 4 Solve a multi-step problem A softball field forms a sector with the dimensions shown. Find the length of the outfield fence and the area of the field. Softball

2. EXAMPLE 4 Solve a multi-step problem SOLUTION STEP 1 Convert the measure of the central angle to radians. 90º = 90º ( π radians 180º ) = π 2 radians

3. EXAMPLE 4 Solve a multi-step problem STEP 2 Find the arc length and the area of the sector. π Arc length: s = r = 180 = 90π ≈ 283 feet θ 2 ( ) Area: A = r 2 θ = (180) 2 = 8100π ≈ 25,400 ft 2 π 2 ( ) 1 2 1 2 The length of the outfield fence is about 283 feet. The area of the field is about 25,400 square feet. ANSWER

4. GUIDED PRACTICE for Example 4 9. What If? In Example 4, estimate the length of the outfield fence and the area of the field if the outfield fence is 220 feet from home plate. The length of the outfield fence is about 346 feet. The area of the field is about 38,013 square feet. ANSWER