# Geometry

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The lateral area of a regular pyramid is 300 square units. The perimeter of its base is 100 units. Find the slant height of the pyramid.

my answer is 5 units is this correct?

• Geometry -

Not quite!

The lateral area of a pyramid, A
=(1/2)(base-perimeter)* slant height

So given A=300, base perimeter =100
we have
slant height = A*2/base-perimeter=6 units

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