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The Length, Breadth and Height of a Room Are 6 M, 5.4 M and 4 M Respectively. Find the Area of : (I) Its Four-walls (Ii) Its Roof. - Mathematics

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Sum

The length, breadth, and height of a room are 6 m, 5.4 m, and 4 m respectively. Find the area of :
(i) its four-walls
(ii) its roof.

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Solution

Length of the room = 6 m

The breadth of the room = 5.4 m

Height of the room = 4 m

(i) Area of four walls = 2(L+B) x H

= 2(6 + 5.4) x 4 = 2 x 11.4 x 4 = 91.2 m2

(ii) Area of the roof = L x B = 6 x 5.4 = 32.4 m2

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 3 | Page 240
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