Sainik School Entrance Exam 2018 Solved Paper

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Question : 34 of 150

Marks: +1, -0

The base of a triangle is four times its height and its area is

50 \m^2

. The length of its base is

10 m
15 m
20 m
25 m

Solution:

(c) Let, the height of triangle = a m
∴ Base of the triangle = 4a m
Area

= 1/4 × 4a × a

⇒

50 = 2a^2

⇒

a^2 = 25

⇒

a = 5

So, base of the traingle

= 4a = 4×5 = 20\m

.

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