Answer:
perimeter = 46
Area = 96 units^2
Explanation:
The given is a right triangle and in right triangle the square length of hypotenuse is equal to sum of other two sides's square length
12^2 + 16^2 = hypotenuse^2
144 + 256 = hypotenuse^2
400 = hypotenuse^2
20 = hypotenuse
The perimeter is equal to the sum of all side lengths
12 + 16 + 18 = 46
The area of a triangle is calculated by multiplying height to the base and that divided by two
16 × 12 ÷ 2 = 96 units^2