How do you convert 2 1/2 years into month?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?