Question

Find the area of a right-angled triangle whose base is 9 cm and height is 4 cm.

• A. $12c{m}^2$
• B. $18c{m}^2$
• C. $15c{m}^2$
• D. $8c{m}^2$

Answer 1

The correct option is B

$18c{m}^2$

Area of right triangle $=\frac{1}{2}\times base\times height$
$=\frac{1}{2}\times 9cm\times 4cm$
$=6c{m}^2$