To find the area you need to multiply.
To find the lateral surface area of a pyramid, you can find the area of each triangle, A = 1/2bh or A = 1/2lw, then multiply by the number of triangles, which would be based on the number of sides of the base; or you can take half the perimeter and multiply by the slant height.
Answer: 19 units
Step-by-step explanation:
Count from A down then the left until you reach B.
Answer:
no 12,5,12
Step-by-step explanation: