GCSE Secondary Maths Age 13-17 - Shapes & Area: Perimeter And Areas - Explained

The video tutorial explains how to draw a triangle with the same area as a given trapezium on a centimeter grid. It begins by calculating the area of the trapezium using the formula (1/2) * (a + b) * h, where a and b are the lengths of the parallel sides, and h is the height. The area is found to be 18 squares. The tutorial then demonstrates how to draw a triangle with an area of 18 squares by selecting a base and height whose product is 36. The video concludes with exam tips, emphasizing the importance of remembering formulas.

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

• Length times width

• Half of the sum of parallel sides times height

• Base times height

• Base times height divided by 2

If the area of a trapezium is 18 squares, what should be the product of the base and height of a triangle with the same area?

• 36

• 9

• 72

• 18

Which of the following is a valid base-height pair for a triangle with an area of 18 squares?

• 8 and 5

• 3 and 12

• 9 and 4

• 5 and 7

What is a useful exam tip mentioned for remembering formulas?

• Ignore them and focus on practice

• Memorize them the night before

• Write them on the front cover of your exam paper

• Write them on your hand

What is the importance of knowing the area formula for a trapezium in exams?

• It is only useful for drawing shapes

• It is not important

• It makes solving geometry problems easier

• It helps in solving complex algebra problems