The formula for the area of a triangle is:
A = 1/2 x base x height
In this case, the base is 21 feet and the height is 8 feet. So, we can plug these values into the formula:
A = 1/2 x 21 x 8
A = 84 square feet
Therefore, the area of the wall to be painted is 84 square feet.
John is moving up to the attic and wants to paint one wall blue the wall is a triangle with a base of 21 feet and a height of 8 feet what is the area of the wall to be painted
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