Question

find the lateral surface area of this square - based pyramid. 10 ft 10 ft lsa = ? ft²

Explanation:

Step1: Recall lateral - area formula

The lateral surface area (LSA) of a square - based pyramid is given by $LSA = 2bs$, where $b$ is the base side length and $s$ is the slant height.

Step2: Identify values of $b$ and $s$

From the problem, $b = 10$ ft and $s=10$ ft.

Step3: Substitute values into formula

$LSA=2\times10\times10$.

Step4: Calculate the result

$LSA = 200$ ft².

Answer:

$200$ ft²