What is the slant height of a pyramid with a 864 square inch surface area and a 18 inch square base

To determine the slant height, you will use what you know about surface area of a pyramid.

The surface area of a square Peerman consists of one square, and four congruent triangles.

We know the length of one side on the square base is 18 inches.

The area of the base then would be 324 in.².

Subtract this from the total surface area.

864-324 = 540 in.²

Divide 540 in.² by 4 because there are four congruent triangles.

540/4= 135 in.²

Each triangle is 135 in.². Now use the formula for area of a triangle to solve for the missing slant height.

A = 1/2 x b x h
135 = 1/2 x 18 x h
135 = 9h
h = 15 inches.

The slant height is 15 inches.

The answer is 270 cars.you can do this by making a proportional relationship. for instance, 200 is the whole we are using, so on a “number line” 200 would be over 100%. now, since he sells 35% more, add 35% to 100% to get 135% on the other side of the “number line” on the bottom half, leaving the top half empty.cross multiply 200 by 135 then divide by 100 to get your answer. i hope this , if it did, , if you don’t mind, giving me brainiest! 200/100% } 200 • 135 /100 ? /135%