# The Dimension of a Class-room Are; Length = 15 M, Breadth = 12 M and Height = 7.5 M. Find, How Many Children Can Be Accommodated in this Class-room; Assuming 3.6 M3 Of Air is Needed for Each Child. - Mathematics

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The dimension of a class-room are; length = 15 m, breadth = 12 m and height = 7.5 m. Find, how many children can be accommodated in this class-room; assuming 3.6 m3 of air is needed for each child.

#### Solution

Length of the room = 15 m

Breadth of the room = 12 m

Height of the room = 7.5 m

Volume of the room = L x B x H = 15 x 12 x 7.5 m3 = 1350 m3

Volume of air required for each child = 3.6 m3

No. of children who can be accommodated in the classroom.

= "Volume of the classroom"/"Volume of air needed for each child"

= (1350 "m"^3)/(3.6 "m"^3)

= 375

Concept: Surface Area of a Cuboid
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#### APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 21 Surface Area, Volume and Capacity
Exercise 21 (B) | Q 2 | Page 240