Find the side of a square garden which has an area equal to the area of the rectangular garden having sides 6.4m and 2.5m

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

Will give a: 122 b: 90 c: 48 d: 180

Let x = a + bi and y = c + di and z = f + gi. which statements are true?