L=2W+2
W=(L-2)/2
A=LW, using W from above makes this
A=L(L-2)/2
2A=L^2-2L
L^2-2L-2A=0, given A=84
L^2-2L-168=0
(L-14)(L+12)=0, since L>0
L=14
The length of the rug is 14 ft
(W=(L-2)/2=6 ft)
Answer
Substitute w by 7
7^3
7x7x7 =343
1. S.S.A
2.S.A.A
3. That looks like the same question as two I can't quite see it.
18cm (A). Remember to get the radius when you have the circumference is to ALWAYS divide it by 2. 36/2 = 18
You can look up cymath.com it will work the problem out for you and show you the steps.
