Answer: 
Step-by-step explanation:
Given
Height is
more than its width
Suppose the width is
. So, height becomes 
Area of the painting is 
Area is the product of width and height

Neglect the negative values

The so-called pythagorean triple will just be the distance between both points,

More = Addition
"Twice a Number" = Multiplication (specifically by two)

Since the order of operations tell us to multiply before we add, we can simplify

.
Answer:
Step-by-step explanation:
Given parameters:
Dimensions of the equilateral triangle = 6.2cm
Unknown:
Perimeter = ?
Solution:
The perimeter of the triangle is the sum of all its sides;
Perimeter = 3(L) for an equilateral triangle;
Perimeter = 3(6.2) = 18.6cm
to the nearest mm = 19.0cm
Answer:
You are right
Step-by-step explanation: