Question

please help me work this out

Answer 1

$\huge\mathbb{SOLUTION}$

$\sf Area\;of\;triangle$

$\sf \frac{1}{2}\;×base×height$

$\sf \frac{1}{2}\;×18×11$

$\sf 9×11$

$\sf 99cm^2$

Answer 2

$\huge\underline\mathcal{SOLUTION}$

Area of triangle

1/2 × base × height

= 1/2 × 18 × 11

= 9 × 11

= 99cm²