1. Find the surface area of the square pyramid shown below? 2. Find the surface area of the cube shown below?

Part 1)

Part 2)

Step-by-step explanation:

Part 1) we know that

The surface area of a square pyramid is equal to the area of the square base plus the area of its four triangular faces

so

we have

substitute

Part 2) we know that

The surface are of the cube is equal to the area of its six square faces

so

we have

substitute

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent