Question

Find the area of a triangle whose base is $10$ cm and altitude is $6$ cm.

• A. $20c{m}^2$
• B. $30c{m}^2$
• C. $10c{m}^2$
• D. $40c{m}^2$

Answer 1

Answer: (B)

$30c{m}^2$

Given: base of triangle = $10$cm

height = $6$cm.

$\therefore$ A(triangle) = $\frac{1}{2}\times$ base $\times$ height

$=\frac{1}{2}\times 10\times 6$

$=30c{m}^2$