<span>3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745............................................................................</span>
The formula for the circumference is pi times the diameter.
The circumference is 42 x 3.14.
42 x 3.14 = 131.88mm
The answer would be D.
Hope this helps!
- Juju
Step-by-step explanation:
step 1. (a + b)(a - b) = a^2 - ab + ab - b^2 = a^2 - b^2.
step 2. this is always a binomial and never a trinomial and hence never a perfect square trinomual.
step 3. answer: never.