anonymous
  • anonymous
A square pyramid is shown. What is the surface area? A square based pyramid, with bases labeled 3.5 centimeters and side length of triangle labeled 7 centimeters. 19.25 cm2 30.625 cm2 49.625 cm2 61.25 cm2
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
MEDAL AND FAN
anonymous
  • anonymous
do you know what the formula is?

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anonymous
  • anonymous
• 1/3 × [Base Area] × Height
anonymous
  • anonymous
Yes 3.5
welshfella
  • welshfella
1/3 * base area * height is the volume of the pyramid not the surface area
anonymous
  • anonymous
So whats the answer? @welshfella
welshfella
  • welshfella
area of base = 3.5^2
welshfella
  • welshfella
= the areas of the 4 triangles
welshfella
  • welshfella
plus area of 4 triangles
welshfella
  • welshfella
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welshfella
  • welshfella
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welshfella
  • welshfella
the area of the triangle = 0.5*3.5* height height = sqrt(7^2 - 1.75^2) multiply the area by 4 and add it to 3.5^2 for the answer

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