Can someone please help me with this.

Brent 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? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2

Pls! does anybody know a shortcut for answering these types of questions in the future?

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.