Area and Dimensions of Figures

In this video tutorial, the teacher demonstrates how to calculate the area of three different geometric figures, rounding the results to the nearest tenth. The first problem involves using the formula for the area of a triangle, requiring the calculation of a missing base using the Pythagorean theorem. The second problem also involves a triangle, but with congruent sides, and the third problem combines the areas of a rectangle and a triangle. The video concludes with a brief mention of the next set of problems to be covered in a subsequent video.

What is the main objective of the video tutorial?

• To calculate the area of figures

• To find the perimeter of figures

• To learn about congruent triangles

• To solve algebraic equations

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

• Base times height

• Base plus height

• One-half base times height

• Base divided by height

What is the value of 'a squared' in the first problem?

• 49

• 100

• 51

• 25

What is the approximate area of the first figure rounded to the nearest tenth?

• 26 square feet

• 24 square feet

• 25 square feet

• 24.9 square feet

In the second problem, what is the length of the base used in the area calculation?

• 4

• 8

• 16

• 12

What is the approximate area of the second figure rounded to the nearest tenth?

• 45.5 square centimeters

• 45.4 square centimeters

• 45.3 square centimeters

• 45.2 square centimeters

What is the length of the rectangle in the composite figure?

• 9

• 11

• 14

• 4

What is the height of the rectangle in the composite figure?

• 4

• 14

• 11

• 9

What is the area of the rectangle in the composite figure?

• 63 square inches

• 100 square inches

• 154 square inches

• 217 square inches

What is the base of the triangle in the composite figure?

• 9

• 11

• 14

• 4