Answer:
The correct answer is option B. 756 units²
Step-by-step explanation:
Points to remember
Surface area of pyramid = Base area + (4 * area of side triangle)
To find the base area
Base area = side * side
= 14 * 14 = 196 units²
To find the area of side triangle
Area of triangle = bh/d
Area = (14 * 20)/2 = 140 units²
To find the surface area of pyramid
Surface area = Base area + (4 * area of side triangle)
= 196 + (4 * 140)
= 756 units²
