Sainik School Entrance Exam 2019 Solved Paper

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Question : 8 of 150

Marks: +1, -0

If the dimensions of a room are

l, b

and

h,(∵ l →

length,

b \to

breadth and

h \to

height) then which of the following is the area of its four walls?

$2h(l+b)$
$2h(l+h)$
$2l(h+h)$
$2h+l+b$

Solution:

(a) Area of four walls of a room

= 2(l+b)h

.

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