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QveST [7]
3 years ago
11

Alex tried to find the lateral area of the pyramid. FIND HIS ERROR AND CORRECT IT.

Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
5 0

Answer:

His error is multiplying by 4 sides as he thought it was total surface not lateral surface area- the final answer is 12

Step-by-step explanation:

He should have multiplied it by 3, because the 3 sides- not including the base- is what lateral surface area is. He originally did total surface area not lateral surface area so each sides area is 4m squared then you just multiply it by 3 and its 12

evablogger [386]3 years ago
4 0
Error is that he is multiplying both sides
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Step-by-step explanation:

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c^2=a^2+b^2-2abcosC which for us looks like this:

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Use the 2nd button and the cos button to find the missing angle.

Angle C = 45.4 which is, rounded to the nearest degree, 45°

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