Answer: C≈62.83ft
Step-by-step explanation:
simply take your radius and times it by 2 and you get 20. then times twenty by pi.
Answer:
X=5
Step-by-step explanation:
An = -2n(n + 3)
a(15) = -2(15)(15 + 3) = -30(18) = -540
Answer:
(2x+5y)(2x+3y)
=(2x)^2 + [5y+3y]2x + (5y)(3y)
=4x^2 +16xy + 15y^2
Step-by-step explanation:
Answer: Option A)
is the correct expansion.
Explanation:
on applying binomial theorem, 
Here a=3c,
and n=6,
Thus, 
⇒ 
⇒
⇒
⇒