What is the surface area of a pyramid that has a base of 27mm and the slanted height is 35mm?

Total Surface Area = Base (Base + √ (Base2 + 4h2))

Solution:

Total Surface Area = 27 x (27 + √ (27) 2 + 4 (35) 2)

= 27 x (27 + √ (27) 2 + 4 (1225))

= 27 x (27 + √ (729 + 4900))

= 27 x (27 + √ (5629))

= 27 x (27 + (75.0267))

= 27 x (102.0267)

Surface Area = 2754.7199mm^2