You can use the greatest common factor to simplify fractions.
A ratio is an expression that tells us the quotient of two numbers.
In this question, you know that the machine packs
of a box every
of a minute. Since it is constant, you simply have to double the half a minute to a full minute and then also double the rate to get
boxes packed per minute. And
is equal to
in factor form (2x+1)(4x^2-2x+1)
We know that
[Surface area ]=[the area of 4 triangles]+[the area of square base]
[the area of square base]=8*8--------> 64 ft²
[the area of 1 triangle]=(1/2)*b*h
b=8 ft
How the angle is 45°-------> h=b/2-------> h=4 ft
then
[the area of 1 triangle]=(1/2)*8*4------> 16 ft²
and
[the area of 4 triangles]=4*16--------> 64 ft²
[Surface area ]=[64 ft²]+[64 ft²]----------> 128 ft²
the answer is 128 ft²