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andrezito [222]
3 years ago
8

This is a picture of a square pyramid and the net for the square pyramid.

Mathematics
1 answer:
Lelu [443]3 years ago
6 0
We know that
surface area of the square pyramid=area of the base+4*[area of lateral triangle]

area of the base=b²----> area of square
b=6 ft
area of square=6*6---> 36 ft²

area of lateral triangle=b*h/2
b=6 ft
h=9 ft
area of lateral triangle=6*9/2---> 27 ft²

surface area of the square pyramid=36+4*27----> 144 ft²

the answer is
144 ft²
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Given the radius r and the tangent line AB, the length of the line OA is 24 units

<h3>How to determine the length OA?</h3>

The radius r and the tangent line AB meet at a right angle.

By Pythagoras theorem, we have:

AB² = OA² + r²

So, we have:

24² = OA² + 7²

Rewrite as:

OA² = 24² - 7²

Evaluate

OA² = 527

Take the square root of both sides

OA = 23

Hence, the length of OA is 24 units

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<u>Given</u>:

Given that the circle with center O.

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