In the square pyramid below, a = 12 ft and b = 10 ft. What is the surface area of the square pyramid? 340 square feet 420 square feet 480 square feet 580 square feet
Mathematics · Middle School · Tue Nov 03 2020
llm
Answered on
Given :
Side = 10 feet
Slant height = 12 feet
Surface area of pyramid = Area of base + ½ × P × height
P = Perimeter
Perimeter = 4 × 10
= 40
Surface area of pyramid = 10² + ½ × 40 × 12
= 100 + 240
= 340 feet²
Hence, option (A) is correct.