on G=Z^3, we define an operation (k1,k2,k3)(l1,l2,l3) = (k1+ (- 1)^k3.l1, k2 l2, k3 l3). Prove that G is a group

Step-by-step explanation:

A{6d+4.5e45d+4.5e=16.5=4

{6d+4.5e45d+4.5e=16.5=4

D{6d+4.5e6d+0.6e=16.5=4.8

{6d+4.5e6d+0.6e=16.5=4.8

B{30d+22.5e5d+0.5e=82.5=4

{30d+22.5e5d+0.5e=82.5=4

E{12d+9e10d+0.5e=33=8

{12d+9e10d+0.5e=33=8

C

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation: