Learn how to determine the surface area of a triangular pyramid

Learn how to determine the surface area of a triangular pyramid

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to determine the lateral surface area of a pyramid with a regular polygon base, specifically a triangle. It covers the formula for lateral surface area, visualizes the net of the pyramid, and calculates the perimeter and height. The tutorial also discusses finding the area of the base triangle using trigonometry and combines these calculations to find the total surface area.

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7 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the formula for calculating the lateral surface area of a pyramid?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you determine the perimeter of the base of a regular triangle?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the height of the sides of the pyramid in the example?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you find the area of the base triangle given the side lengths?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the value of the height calculated using the tangent of 30 degrees?

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how to calculate the lateral surface area and the area of the base together.

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the final surface area of the pyramid as calculated in the example?

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