Find the area of the circle with the given radius or diameter. use pi = 3.14. d = 10 a = a.314 sq. units b.157 sq. units c.78.5 sq. units

78.5sq units

Step-by-step explanation:

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18