A) 7/3 rad b) 57/9 rad 20
c) 2/5 rad
360°
SY
d) -37/20 rad -27°
e) 2 rad
360°
3. Assuming the earth to be a sphere of radius 3960 mi (6356.91 km). Find the
distance of point 36°N latitude from equator.
(2)
4. A sector of circle has central angle of 50° an area of 605 cm² . Find the radius of the
circle
(3
5. A wheel is turning at the rate of 48 r/min . Express this angular speed in
a) r/s
b) rad/min
c) rad/s
5. If a automobile wheel 78 cm in diameter is rotates at 600 r/min . What is the sp
of the car in km/h
diameter of ac​

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )