I need help for gr 10 trigonometry since I havent done it for along time and kind of forgot what to do

A tall building casts a shadow that is 9.2m long. At the same time a 1.8m person casts a shadow that is 0.4m long. How tall is the building? Find your answer to one decimal place.

I thinks its 9.2/x = 0.4/1.8 and you would cross multiply to get 9.2 x 1.8=16.56/0.4 to get 41.4.

A ramp is designed so that is rises 20cm vertically for every 1 minute horizontally. What is the vertical height of the ramp if it has a horizontal length of 4.2m?

A tree in your yard casts a shadow that is 4.5m long. Your 1.5m tall sister casts a 1m long shadow. How tall is the tree?

4.5 x 1.5 =6.75 6.75 /1=6.75

A 7.6m tall telephone casts a 6.1m shadow. The nearby school casts a 15.8m shadow. How tall is the school to 2 decimal places?

6.1 x 15.8 = 96.38 96.38/7.6=12.68

A model of the CN tower casts a shadow that is 0.9m tall and casts a shadow that is 0.2m long.If the real CN tower casts a 123.3m shadow find the height of the tower to the nearest meter

0.9 x 123.3 = 110.97 110.97/.2 = 554.85

A conical coffee cup is 20cm tall and has a diameter of 8cm. A new cup is designed that is 4cm shorter. What will be the new cups diameter. Find your answer to one decimal place

I had no idea what to do for this one

A tree has a shadow that is 12m long. If you are 1.8m tall and cast a shadow of 1.2m, how tall is the tree.

12 x 1.2= 14.4 14.4/1.8 = 8