Need to find area, confused help pls

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual 

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm2. what is the area of the second triangle?

Alarge cheese pizza costs $18. each topping you add on costs $1.50. how much would it cost to get a large cheese pizza with cc toppings added? write your answer as an expression