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A triangular pane of glass has a height of 28 inches and an area of 280 square inches. What is the length of the base of the pane?

 Mar 19, 2019
 #1
avatar+227 
-5

The formula for a triangle is base x height to find the base you can divide 280 by 28 it proves to be effective because you need to see how many times 28 was multiplied to reach 280... 

 

 

so 280 divided by 28 equals what which is equal to B or base.?

 Mar 19, 2019
 #2
avatar+18274 
+2

Area of a triangle is  1/2 *  Base * Height

Area=280 in^2

 

280 = 1/2 *  Base * 28   divide both sides of the equation by 28

10 = 1/2 * Base         Multiply both sides by 2

20 inches = Base

 Mar 19, 2019
 #3
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0

 

The first answer "The formula for a triangle is base x height"  is wrong 

 

The formula for the area of a triangle is one-half x base x height 

 

.

 Mar 19, 2019

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