Question

surface areas of pyramids and cones
guided practice
type your answer and then click or tap done.
find the surface area of a square pyramid with base edges of 5 cm and a slant height of 3 cm.

Explanation:

Step1: Calculate base area

Base is square: $5×5 = 25$ cm²

Step2: Calculate one triangular face area

Area of triangle: $\frac{1}{2}×5×3 = 7.5$ cm²

Step3: Calculate 4 triangular faces area

$4×7.5 = 30$ cm²

Step4: Sum base and lateral areas

$25 + 30 = 65$ cm²

Answer:

65 cm²