Ooops.....you are correct ! I edited it....sorry if I confused ya !
vertex will be the high (mound shaped) or low point (bowl shaped)
the point given is HIGHER than the vertex .... so this is bowl shaped
ab/ac * bc = b^2
= 11.25/20 * 36 = b^2 b = 4.5
4.5 *c = 36 c = 8 a = 2.5
16 ( 4b - c) ? *** edited ***
(x+y)2 = (x+y)(x+y) = x^2 + xy + xy + y^2 = x^2 + 2xy + y^2
The number of days is irrelavent to the question asked.......
10200 ath / 28 sports = ~ 364 athletes /sport
*** edited ***
Volume of cylinder = pi r2 h if h is increased by 1.4
r will have to decrease to 1.4 r^2 = 1
r = 84.5 per cent of original or decreased by 15.48%
11 / 18 x 100% = ~~61%
Calculate the diagonal of the square....this will be 2 * diameter of circles ....then you can figure the radii