Answer:
D: 21.23 sq in
Step-by-step explanation:
A tennis ball is a sphere, so we're going to use the surface area of a sphere formula. (4πr²)
Remember that radius is HALF of the diameter, which in this case is 2.6. This means the radius is 1.3.
π represents 3.14
Once you plug the values into the above equation, you should receive the above answer.
Density= mass ÷ volume
Density= 5.28 ÷ 2
Density= 2.64 cm3
I believe the answer to how many triangles can go into a shape is the number of sides minus 2. So 98-2=96. And 120-2=118.
I found 1 and 2. x equals -11 and h=-3.85.