The diagram shows rectangle ABCD - OCR - GCSE Maths - Question 20 - 2021 - Paper 3

To find the area of rectangle ABCD, we use the formula for the area of a rectangle:

$$ext{Area} = ext{length} imes ext{width}$$

Here, the length AB is given as 13 cm and the width BC is given as 5 cm. Therefore, we substitute these values into the formula:

$$ext{Area} = 13 ext{ cm} imes 5 ext{ cm}$$

Calculating this gives:

$$ext{Area} = 65 ext{ cm}^2$$

Thus, the area of rectangle ABCD is 65 cm².