Question

Area of triangle PQR is 100 sq cm. If the altitude QT is 10 cm, then the base PR is:
a) 20 cm
b) 15 cm
c) 10 cm
d) 5 cm

Answer 1

$area \: of \: triangle = \frac{1}{2} \times b \times h$

b = base

h = height

So, by using formula

$100 = \frac{1}{2} \times b \times 10 \\ b = \frac{100 \times 2}{10} \\ b = \frac{200}{10} \\ b = 20$

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