Find the radius of C if the shaded region is 47.5. I'm giving 40 points.

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

more detail

step-by-step explanation:

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

have a nice day!