I need to know asap ... find the perimeter and the area of the rectangle

How to solve it and what thw answer is

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice