To find: the lateral and surface area
Answer to Problem 1CYU
The surface area of the square pyramid is
Explanation of Solution
Given:
Formula used:
The lateral area L of a square pyramid is
The surface area S of a square pyramid is S = L + B.
Calculation:
The given figure is a square pyramid.
The objective is to find the lateral and surface area of the square pyramid.
Find the lateral area of the square pyramid.
The side of the square is 13 m.
The perimeter P of the square is P = 4(side).
As side
Substitute side = 13 in the perimeter formula to find the perimeter of the square.
Thus,
The slant height of the square pyramid is 14 m
Substitute P = 52 and l = 14 in the lateral surface area to find the lateral surface area of the square pyramid.
Therefore, the lateral area of the square pyramid is
Find the surface area of the square pyramid.
The area B of the square pyramid is
Substitute B = 169 and L = 364 in the surface area formula to find the surface area of the square pyramid.
Conclusion:
Therefore, the surface area of the square pyramid is
Chapter 12 Solutions
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