#98 Page 16 has the truck gone? If the speed limit is 55 mph, does the driver de
ID: 2911178 • Letter: #
Question
#98
Page 16 has the truck gone? If the speed limit is 55 mph, does the driver deserve a speeding ticket? Find the area of a sector of a circle having rudius r and cen- tral angle 6 93. r= 29.2 meters; --radians 2T 94. r 59.8 kilometers; eradians 95'12.7 centimeters, 0-81 96. r:= 18.3 meters; 0= 125 Concept Check Find the area of each sector Express an- swers in terms of T. 97, 98 4T 8 Solve each problem. 99. Doppler Radar Radar is used to identify severe weather. If Doppler radar can detect weather within a 240-mile radius and creates a new image every 48 sec- onds, find the area scanned by the radar in 1 second. 100, Land Required for a Solar-Power Plant 300- megawatt solar-power plant requires approximately 950,000 square meters of land area to collect the required amount of energy froim sunlight (a) If this land area is circular, what is its radius? (b) If this land area is a 35° soctor of a circle, what is its radius? 101. Area Cleaned by a Windshield Wiper The Ford Model A, built from 1928 to 1931, had a single wind- shield wiper on the driver's side. The total arm and bladeExplanation / Answer
98) area of sector of circle
radius = 8
theta = 4pi
area of sector is given by the formula
A = 1/2 r^2 theta
plugging the values
A = 1/2 (8)^2 ( 4pi)
A = 128 pi
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