Use the formula Area= base times height. You're given that area =300cm^2 and base=20 cm. Plug these into the equation to get 300=20 x height. Now, you just need to solve for height. To do this, you need to undo the multiplication of b x h by dividing the area by the base. So, h = 300/20 Simplify for an answer of 15.
215% of 18 You must change 215% into a decimal by multiplying by 100 which is 2.15 Then you multiply them 2.15×18=38.7 Then you estimate to the nearest whole number 38.7⇒39 You answer is 38.7 Your answer is 39 estimated
