15. Minutes in 365 days. First, there are 60 minutes in an hour and 24 hours in a day. So there are 1440 minutes in a day. Multiply that by the 365 days, and you get: 1440 x 365 = 525,600.
16. Not absolutely sure about this one, but i reckon it's 16/31, as there are 16 odd days.
17. Area of a triangle is 1/2 x h x b Now the two shaded area are = the unshaded area. So it's only one triangle, really. So it's 6 x 8 divided by 2 = 24cm²
