How to find the area of a kite when the side lengths equal 6 and the other sides equal 8

If a =6, what is the value of 2a(3b + 5c)?

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.

Find the solution on the interval [0, 2pi)