Hey there! I'm happy to help!
To find the surface area of a sphere, here is what you do.
You square the radius.
4²=16
You multiply by 4.
16×4=64
And you multiply by pi!
64×π=64π
Therefore, the surface area of the sphere is A. 64π units². It's that easy!
Now you can find the surface area of a sphere! Have a wonderful day! :D
Answer
The answer is 567
Step-by-step explanation:
189*3=567
The square roots are 7 and 9 so the square numbers would be 49 and 81 to equal 130
12/1 divided by 1/9, so when dividing by a fraction you want to flip the second numerator and denominator and then multiply. So the new equation would be 12/1 times 9/1. Which would be 108/1