Find the perimeter of a rectangle with length 24cm and diagonal 25cm. pls help

Need plz been trying to do it for a long time and still haven’t succeeded

In a rectangle klmn, km = 6x + 16 and ln = 49. find the value of x

Ana’s dachshund weighed 5 5/8 pounds when it was born . by age 4 the dog weighed 6 times as much. fill each box with a number or symbols from the list to show how to find the weight of ana’s dog at age 4 . not all numbers and symbols my be used