12.826+2.93= 15.756
Since you have to round it, your final answer would be 15.8
Answer:
B i think
Step-by-step explanation:
Answer:
The circle's diameter is 
Step-by-step explanation:
we know that
The circumference of a circle is equal to

where
D is the diameter of the circle
In this problem we have


substitute the values and solve for D


√3√27
=√(3*27)
=√81
=9
As 9*9=81.
----------------------
RULES:
√a√b=√ab
As (√a√b)²=((√a)²(√b)²)=√a√a√b√b=ab
When:
(√a√b)²=ab
√a√b=√ab
12x+y=10 -----> 12x + y = 10
-3=3x+3y ------> -12x - 12y = 12 (multiplied by -4)
-11y = 22
y= -2
12x - 2 = 10
x = 1