Answer:
Step-by-step explanation:
Rjdjekeoekwodeosaksndnskskskdlfkgrkxkdjxjxjsjxjxjdkxkfkgkskskfkxkdlckffkkdkxkdkdkkfgjdjskwodkkdskskdkdkdkdkdkdkdkdkdkdkddkdkkdkddkdkddkddkdkdkakakaakakakakakakakakaakalalkddkgjgjgjdksfkskdkfjfj
Use this equation :
al=2(pi)rh