More maths! Will mark brainliest if correct.

Step-by-step explanation:

Triangle:

Base = 4 units

Height = 3 units   {perpendicular height}

= 6 square units

Rectangle:

To find the area count the number of squares. Number of square = 6

Area = 6 square  units

or You can find the area of the rectangle as bellow also

Length = 3 units

Width = 2 units

Area = length*width

       = 3*2

       = 6 square units

Both the triangle and rectangles has the same area 6 square units

15 units use socratic

step-by-step explanation: 15 units

what is the original number? you forgot to add it.