Learning Task 3: Solve the following. Do this in a separate sheet of paper.
1. A box is ( 2x-3) by ( x + 5) by ( 3x +1), what is the volume of the box if x = 3
cm?
bh
=
If the base (b) = 10 cm and
2
2. The formula for the area of a triangle is A=
the height (h) = 6 cm, what is the area of the triangle?
3. The length (1) of the rectangle is x2 + 2x - 3 and the width (w) is 5x + 4, what
is the perimeter of the rectangle.
4. From the sum of 3x3 + 7x2 - 5 and 2x2 + 3x + 8 take away 5x2 + x -5.
5. What should be added to 3x3 + 4x2 -7 to have a sum of 4x3 + x2 + 5.​