Answer:
Surface area of the square based pyramid is 134.4in²
Step-by-step explanation:
Surface area of the square based pyramid is expressed as:
S = a²+2a√a²/4 + h²
a is the base edge
h is the slant height of the pyramid
Given a = 7in, h = 5in
S = 7²+2(7)√7²/4+5²
S = 49+ 14√49/4+25
S= 49+ 14√149/4
S = 49+14√37.25
S = 49+14(6.1)
S = 49+85.4
S = 134.4in²
