Question

How can the area of this triangle be

determined by forming a rectangle?
Select from the drop-down menus to 2 4 11 13 13 26 30 169
correctly complete the statements.
Copy and rotate the triangle and
place it next to the existing triangle
to form a rectangle. The length of the
rectangle is Choose... units. The
width of the rectangle is
Choose... units. The area of the
rectangle is Choose... square
units.
The area of the triangle is half the
area of the rectangle, so the area of
the triangle is Choose... square
units.

Answer 1

Take one box as 1 unit

• Length=13units
• Breadth=2units

Area of the rectangle:-

• Length×Breadth=13(2)=26

Area of triangle=1/2(26)=13 units^2