Triangle Area and Perimeter Problems

In this video, Teacher Joy explains how to calculate the area and perimeter of triangles. The video begins with an introduction to the topic, followed by a detailed example of calculating the perimeter using the sum of the triangle's sides. Next, the video demonstrates how to calculate the area using the formula: area = 1/2 * base * height. Additional examples are provided to reinforce the concepts. The video concludes with a call to action for viewers to like and subscribe.

What are the given side lengths of the triangle discussed in the introduction?

• 10 meters, 15 meters, 25 meters

• 11 meters, 14 meters, 20 meters

• 12 meters, 16 meters, 22 meters

• 13 meters, 17 meters, 23 meters

Which formula is used to calculate the perimeter of a triangle?

• a^2 + b^2 + c^2

• a * b * c

• a/b + b/c + c/a

• a + b + c

What is the perimeter of the triangle with sides 20 meters, 14 meters, and 11 meters?

• 55 meters

• 45 meters

• 50 meters

• 60 meters

What is the formula for calculating the area of a triangle?

• 1/2 * base * height

• base + height

• base * height

• base/height

If a triangle has a base of 20 meters and a height of 7 meters, what is its area?

• 100 square meters

• 80 square meters

• 90 square meters

• 70 square meters

Which of the following is NOT a step in calculating the area of a triangle?

• Dividing by 2

• Multiplying base and height

• Adding the side lengths

• Identifying base and height

What is the base of the triangle used in the first example of area calculation?

• 20 meters

• 11 meters

• 7 meters

• 14 meters

What should you do after calculating the product of base and height in the area formula?

• Subtract the height

• Add the side lengths

• Divide by 2

• Multiply by 2

In the additional examples, what is the area of a triangle with a base of 6 inches and a height of 7 inches?

• 21 square inches

• 24 square inches

• 28 square inches

• 30 square inches

What is the perimeter of a triangle with sides measuring 12 cm, 15 cm, and 10 cm?

• 45 cm

• 37 cm

• 40 cm

• 42 cm