Rectangular Prism


1st: find the area of a rectangle -multilpy the length by width -A= l x w 2nd: find the total surface area -add all the areas
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__________________________________________________________________ Triangular Prism


1st: find the area of a triangle -multiply base by height -divide by 2 -A= b x h /2 2nd: find the area of the rectangles -multiply length by width -A= l x w 3rd: find the total surface area -add all the areas ___________________________________________________________________





1st: find the circumference -If you have the diameter, what you have to do is multiply diameter by π (3.14) -πd=circumference -If you have the radius, what you have to do is multiply 2 by the radius because 2 radius makes diameter. -2r=diameter -So you have the diameter, what you have to do next is find the circumference by multiplying diameter by 3.14 * You need to find the circumference because you'll need it to get the are of a rectangle * 2nd: to find the area of a circle -You need to find the radius of a circle -area=π x r x r 3rd: Find the area of the rectangle ___________________________________________________________________

area of the circle is 50.24 cm²

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