Triangle Area and Perimeter Concepts

The video tutorial explains how to calculate the perimeter and area of a triangle. It begins with defining the perimeter as the sum of the triangle's sides and demonstrates the calculation process. The tutorial then moves on to calculating the area using the formula 1/2 base times height, providing a detailed walkthrough of the multiplication process, including handling decimals. The video concludes by verifying the area calculation using a calculator.

What is the perimeter of a triangle?

• The area inside the triangle

• The distance around the outside

• The sum of all its angles

• The length of its longest side

How do you calculate the perimeter of a triangle with sides 6.2 cm, 9.3 cm, and 8.7 cm?

• Divide the sum of the sides by 3

• Subtract the smallest side from the largest

• Add all side lengths

• Multiply all side lengths

What is the formula for the area of a triangle?

• Base divided by height

• 1/2 base times height

• Base plus height

• Base times height

If a triangle has a base of 8.7 cm and a height of 5.4 cm, what is the first step in finding its area?

• Add the base and height

• Multiply the base by the height

• Divide the base by the height

• Subtract the height from the base

How many decimal places should the product of 0.5 and 8.7 have?

• Two decimal places

• One decimal place

• No decimal places

• Three decimal places

What is the area of the triangle with base 8.7 cm and height 5.4 cm?

• 20.49 square centimeters

• 24.20 square centimeters

• 23.49 square centimeters

• 22.35 square centimeters

Why is it important to verify the area calculation with a calculator?

• To ensure the units are correct

• To find the perimeter

• To check for calculation errors

• To convert the area to meters

What units are used for the area of a triangle?

• Centimeters

• Square centimeters

• Meters

• Cubic centimeters

What is the significance of the decimal places in the area calculation?

• They determine the accuracy of the measurement

• They are not important

• They only matter for the perimeter

• They are used to convert units

What is the final step in verifying the area calculation?

• Check the product on a calculator

• Add the base and height

• Recalculate the perimeter

• Convert the area to square meters