2D Area & Perimeter: WJEC GCSE Foundation November 2024 Unit 1 Q18

Foundation November 2024 Unit 1 Q18

WJECFoundationCurrent spec3 marks2D Area & Perimeter

18. Calculate the area of the trapezium shown below.
You must give the units of your answer. [3]

Diagram not drawn to scale

From the formula list: Area of trapezium \(= \dfrac{1}{2}(a+b)h\)

Mark scheme

Scheme	Marks	Comments
(Area =) \(\dfrac{(15 + 9)}{2} \times 8\) or equivalent	M1	May be seen in stages. Award M1 for one of the following: \(\dfrac{(15 - 9) \times 8}{2} + 8 \times 9\) (= 24 + 72) \(15 \times 8 - \dfrac{8 \times (15 - 9)}{2}\) (= 120 – 24)
= 96	A1	Allow M1A1 for correct intent or complete method seen with correct answer .e.g. 15 + 9 × 8 ÷ 2 = 96
cm²	U1	Independent of all other marks.