If r is the radius of a sphere its surface area = 4(pi)r^2.
If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2.
So the surface area becomes 4-fold or the increase in surface area is 300%.
ANSWER

EXPLANATION
The area of the given triangle can be calculated using the formula,

Where b=54yd , c=54yd,and A=27° is the included angle.
We plug in these values to get;


The correct answer is D.
1 11/24 is the answer for 5/8 +5/6
Congruent means same as so angle 5 is correct
2x +2 when x = 4 = 10 -1 = 9?