Lateral Area and Volume of a Pyramid

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SUMMARY

The discussion focuses on calculating the volume of a square pyramid given its slant height and lateral area. The lateral area is provided as 350 m², and the slant height is 25 m. The correct formula for volume is identified as V = (1/3)(b²)(h), where b is the base length and h is the height. The initial calculation using V = SQRT(2)/6*b³ is incorrect, leading to a miscalculation of the volume.

PREREQUISITES
  • Understanding of geometric formulas for pyramids
  • Knowledge of lateral area calculations
  • Familiarity with volume formulas for three-dimensional shapes
  • Ability to manipulate algebraic equations
NEXT STEPS
  • Study the derivation of the lateral area formula for pyramids
  • Learn how to calculate the height of a pyramid using slant height and base dimensions
  • Explore the application of the volume formula V = (1/3)(b²)(h) in various pyramid problems
  • Practice solving similar geometry problems involving pyramids
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Students studying geometry, educators teaching mathematical concepts related to three-dimensional shapes, and anyone preparing for standardized tests involving geometric calculations.

golb0016
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Homework Statement


A square pyramid has a slant height of 25 m and a lateral area of 350 m2. Which is closest to the volume of the pyramid?

Homework Equations



A = 2sb+b^2
V = SQRT(2)/6*b^3

The Attempt at a Solution



350 = 2 (25) b + 0 -> b = 7m (B^2 is 0 since it is lateral area only)

V = SQRT(2)/6*(7)^3 = 80m^3

This answer is not an option but I can't seem to find the error.
 
Physics news on Phys.org
You found the right b, but you have the wrong volume formula. V=(1/3)(b^2)(h), where h is the height perpendicular to the base.
 

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