What is the perimeter of the triangle?

The base of the rectangle pyramid is 13 inches long and 12 inches wide the height of the pyramid is 18 inches . what is the volume of the pyramid ?

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work