What is the surface area of a square pyramid with a base perimeter of 60 inches and a slant height of 13 inches? 450 in. 2 O 780 in.2 390 in? 0 615 in.2​

total area = 615 sq. in.

Step-by-step explanation:

There are 4 triangles that make up the lateral area.  The base of each triangle is 60/4 = 15 in. and the height of each triangle is 13 in.  So, the area of one triangle = .5bh = .5(15)(13) = 97.5.  The lateral area = 4(97.5) = 390.  The area of the square base is 15(15) = 225.  The total area = 390 + 225 = 615 sq. in.

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following