Question

Brian needs to paint a logo made using two right triangles. The dimensions of the logo are shown below. What is the difference between the area of the large triangle and the area of the small triangle? 7.5 cm2 15.0 cm2 19.5 cm2 39.0 cm2

Answer 1

;small triangle;
ab/2

ab/2

(6) (2) / 2


12/2

6

;large triangle ;
ab/2

(9) (3)/2

27/2

13.5

------------
13.5 - 6 =7.5

7.5 cm² (A)

Answer 2

small triangle:

ab/2

ab/2 

(6) (2) / 2 


12/2

6

large triangle:
ab/2

(9) (3)/2

27/2

13.5


13.5 - 6 =7.5

7.5 cm² (A)