What is the measure of angle cae? ?

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Hurry if the population of of an ant hill doubles every 10 days and there are currently 100 ants living in the ant hill what will the ant population be in 20 days