the radius of a circle is doubled. a . how does the circumference change? b. How does the area change?

Let's say the original radius was "r", so the circumference is 2πr and the area is πr².

Now when you double the radius, the you get a new circle with radius 2r, circumference 2π(2r) = 4πr, and area π(2r)² = 4πr².

2x3 – 6x2 – 14x + 24 square centimeters

if i'm wrong i'm sorry : )

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.