Here is a triangle - Edexcel - GCSE Maths - Question 18 - 2022 - Paper 2

To find the area of the triangle, we can use the formula:

ext{Area} = rac{1}{2} imes a imes b imes ext{sin}(C)

where:

• $a = 11.2 \, ext{cm}$
• $b = 4.3 \, ext{cm}$
• $C = 118°$

Substituting these values into the formula:

ext{Area} = rac{1}{2} imes 11.2 imes 4.3 imes ext{sin}(118°)

First, calculate the sine value:

$ext{sin}(118°) approx 0.8290$

Now substitute this value back into the equation:

ext{Area} = rac{1}{2} imes 11.2 imes 4.3 imes 0.8290 approx 25.9 \, ext{cm}^2

Finally, rounding this to three significant figures gives:

$ext{Area} approx 25.9 \, ext{cm}^2$