I'm sorry, I'm not sure, but try your best!
Answer:
i think its 600cm
Step-by-step explanation:
20 * 7 = 140 * 2 = 280
20 * 16 = 320
320 + 280
600
2x²- x -3 = 0 ⇒ 2x²-x= 0 + 3 ⇒ 2x² - x = 3 ⇒ 2x = 3 ⇒ x = 1.5
Tanx=85
Sin85=0.100
I hope my answer will be helpful to you