Identify the volume and surface area of a sphere with great circle area 225π ft2 in terms of π.
a: v = 4500π ft3; s = 900π ft2
b: v = 900π ft3; s = 300π ft2
c: v = 900π ft3; s = 4500π ft2
d: v = 300π ft3; s = 900π ft2

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2