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Grade 8 Math Chart Cessily Flores 2 nd pd P.I.T
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Perimeter: The outside of the object Square P=4s Rectangle P=2l=2w or P=2(l+w)
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Word Problem: What is the perimeter? A.45 B.39 C.60 D.34 12 in 5in
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Word Problem: If the side is 9.25. What is the perimeter? A. 38 B.30 C.28.5 D.40
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Circumference: All around the circle Circle C=2 r C=2 r or C= d
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Word Problem: The diameter is 13. What is the circumference? A. 40.82 B.38 C.12.25 D.41.30
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Area: The inside of the object Square A=s² Triangle A=½bh or A=bh÷2 Circle A= r² Rectangle A=lw or A=bh Trapezoid A=½(b¹+b²)h
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Word Problem: Find the area of the triangle. A. 30 B. 22 C. 22.5 D. 19 h=6 7.5
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Word Problem: If the length is 10 and the width is 23 what is the area? A.20 B.230 C.33 D.55
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Word Problem: A.121 B.22 C.44 D.211 If the side length is 11. What's the area?
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Word Problem: What is the area? 10 6 A.25 B.192 C.16 D.384 h=24
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Word Problem: If the diameter is 3. What is the area? A.7.065 B.9.24 C.765 D.8.0
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Surface Area: The inside of a three-dimensional shape. Total is all the of the shape. Lateral is only the sides. Cube(total) S=6s² Pyramid(total) S=½Pl+B Pyramid(lateral) S=½Pl Prism(total) S=Ph+2B Prism(lateral) S=Ph Cylinder(lateral) S=2 rh Cylinder(total) S=2 rh+2r ² or S=2 r(h+r)
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Word Problem:
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Find the lateral surface area of the prism.
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Word Problem: Find the surface area of the prism.
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Volume Prism V=Bh Cylinder V=Bh Pyramid V=¹/³Bh Cone V=¹/³Bh Sphere V=1/3 r ³
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Word Problem:
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Pi =3.14 or =22/7
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Pythagorean Theorem: a²+b²=c²
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Simple Interest Formula: I=prt
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P represents the Perimeter of the Base of a three-dimensional figure. B represents the area of the Base of a three dimensional figure.
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