9514 1404 393
Answer:
(c) 2440
Step-by-step explanation:
The sum of the squares of numbers 1 .. n is ...
s(n) = n(n +1)(2n +1)/6
You want the sum of squares from 5 to 19. We can compute that from ...
s(19) -s(4) = (19(20)(39) -4(5)(9))/6 = (14820 -180)/6 = 2440
Answer:
From the attached graphic we see that
rhombus side = Sqr Root [(Long Diagonal / 2) ^ 2 + (Short Diagonal / 2) ^ 2]
rhombus side = Sqr Root [(24/2)^2 + (18/2)^2]
rhombus side = Sqr Root [144 + 81]
rhombus side = Sqr Root (225)
rhombus side = 15 feet
Step-by-step explanation:
