! this figure consists of two semicircles and a rectangle.what is the perimeter of this figure? use 3.14 for π .a) 213.52 mb) 316.76 mc) 423.52 md) 559.52 m

(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

6/20

step-by-step explanation: