Question

calculator
the shape shown below has a base of 9 cm and a height of 4 cm.
image of a triangle
what is the area of the shape?
blank cm²

Explanation:

Step1: Recall triangle area formula

The area \( A \) of a triangle is given by \( A = \frac{1}{2} \times \text{base} \times \text{height} \).

Step2: Substitute values

Here, base \( = 9 \, \text{cm} \) and height \( = 4 \, \text{cm} \). Substitute into the formula: \( A = \frac{1}{2} \times 9 \times 4 \).

Step3: Calculate the result

First, multiply \( 9 \times 4 = 36 \), then multiply by \( \frac{1}{2} \): \( \frac{1}{2} \times 36 = 18 \).

Answer:

\( 18 \)