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need help asap please help Find the surface area of this regular pyramid

Sagot :

Answer:

189 ft²

Step-by-step explanation:

In the above diagram we are given

Slant height = 6ft

Base = 9 ft

The formula for the surface area of this regular pyramid is given as:

S.A = 2bs + b²

S.A = 2 × 9 × 6 + 9²

S.A = 108 + 81

S.A = 189 square feet(ft²)