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The area of a rectangle equals its length times the width ( base times the height ) .

Discover essential geometric formulas for calculating area, perimeter, surface area, and volume of shapes such as rectangle, square, parallelogram, triangle, prism, and cube. Easy-to-understand explanations and examples included.

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The area of a rectangle equals its length times the width ( base times the height ) .

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  1. A = length x width = lw or A = base x height = bh The area of a rectangle equals its length times the width (base times theheight).

  2. Width (w) Length (l)

  3. The area of a square equals its side times side.

  4. Side (s) Side (s)

  5. The perimeter of a rectangle equals the sum of its length and width multiplied by two.

  6. Width (w) Length (l)

  7. The perimeter of a square equals 4 times the length of a side.

  8. Side (s) Side (s)

  9. The area of a parallelogram equals the product of its base (b) and height (h). The base and height must form a right angle (90º).

  10. height (h) base (b) right angle (90º)

  11. The area of a triangle equals halfof the product of base (b) and height (h). Its base and height must form a right angle (90°).

  12. height (h) right angle (90º) base (b)

  13. Surface area is the total area of the surfaces of a solid figure. • Surface area is measured in square units ( ) Top Right Front

  14. TOP RIGHT BACK LEFT FRONT BOTTOM

  15. BACK TOP LEFT SIDE RIGHT SIDE BOTTOM FRONT

  16. TOP is congruent to BOTTOM • RIGHT is congruent to LEFT • FRONT is congruent to BACK

  17. 6 cm 4 cm 8 cm

  18. height (h) width (w) length (l) Formula for Surface Area of Rectangular Prism Area = 2(lw + lh + wh)

  19. Side Surface Area of a Cube = 6 x side² Surface Area of a Cube = 6s²

  20. 5 inches

  21. Volume is the measurement of the number of cubic units ( ) that make up a solid figure. • Volume measures how much room a solid figure takes up in space. • Volume also measures how much room is in a solid figure (capacity).

  22. The volume of a rectangular prism equals its length timeswidth times height. Volume = length x width x height

  23. HEIGHT WIDTH LENGTH

  24. height (h) width (w) length (l)

  25. Side Volume = side x side x side Volume = s³

  26. Volume = side x side x side = side³= s³ Volume = 5 inches x 5 inches x 5 inches = 125 inches³ 5 inches

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