Ik I don't normally ask actual questions but how do you multiply radicals T^T pls

Arectangular exercise mat has a perimeter of 36 feet the length of the mat is twich the width writeand solve an equation to determine the length in feet. of the mat then find the area in square feet of the mart

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?