Kurt says that if with a number n, multiples it by the whole number, and then adds 3, he will get 45 n(n+1)+3=45

the answer is d

for problems like this theres an app, its photomath that explains the problem and gives the answer hope i

what chart am i supposed to follow?

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!