1. A 2.5 pound bag of apples cost $2.99. Calculate the unit rate showing pounds of apples per dollar and the unit rate showing dollars per pound of apples. 2.An 8 pound bag of oranges costs $4.95. Calculate the unit rate showing pounds of oranges per dollars and the unit rate showing dollars per pound of oranges.

3. A box of 40 envelopes costs $2.50. Calculate the unit rate showing number of envelopes per dollar and the unit rate showing dollars per envelope.

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the answer is:

the lateral area is equal to

to find the lateral area of the square pyramid, first we need to find the perimeter of the base, and then, find the lateral area using the following formulas:

where,

s, is the base length

slant height, is the height of a the side of the pyramid

we are given:

now, calculating the perimeter of the base, we have:

then, calculating the lateral area:

hence, we have that the lateral area is equal to

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