Question 1
Find the length of the closed loop part of the curve 3y
2 = x(1 - x)
2.
◦ 2 units
◦

units
◦

units
◦ 1 unit
◦

units
Question 2
Assuming the Earth is spherical with radius 6378 km, find the area of the surface of the Earth between the Tropic of Cancer (23.5° north latitude) and the Antarctic Circle (66.5° south latitude) as shown in the figure below.