GCSE Maths - How to Find the Area of Rectangles, Parallelograms, Triangles and Trapeziums #105

The video tutorial explains how to calculate the areas of rectangles, parallelograms, triangles, and trapeziums using specific formulas. It begins by defining the variables used in these formulas, such as length, width, base, height, and the top side of a trapezium. The tutorial then provides step-by-step instructions for calculating the area of each shape, including examples with measurements. It emphasizes the importance of understanding the formulas and the reasoning behind them, such as the use of 1/2 in the triangle area formula to account for its shape.

What does the letter 'B' represent in the area formulas discussed?

• Base

• Boundary

• Bottom

• Breadth

How do you calculate the area of a rectangle?

• Base times Height

• Base plus Height

• Length times Width

• Length plus Width

If a rectangle has a length of 7 cm and a width of 3 cm, what is its area?

• 24 square cm

• 10 square cm

• 21 square cm

• 14 square cm

What is the formula for the area of a parallelogram?

• Length times Width

• Base times Vertical Height

• Base times Width

• Base plus Height

Why is the area of a triangle calculated using 1/2 times base times height?

• To simplify the calculation

• Because a triangle is half of a rectangle

• To find the average height

• To account for the triangle's slant

What is the formula for the area of a trapezium?

• Base times Height

• Length times Width

• Average of top and bottom sides times Height

• Base plus Top

If a trapezium has a bottom length of 14 cm, a top length of 8 cm, and a height of 7 cm, what is its area?

• 77 square cm

• 84 square cm

• 70 square cm

• 91 square cm