Sachin wants to make a pet house for his dog with length, breadth and height of 3m, 2m and 1m respectively. What is the area of walls inside the pet house that has to be painted? [3 MARKS]

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Solution

Concept: 1 Mark
Formula: 1 Mark
Application: 1 Mark

$l = 3, b = 2, h = 1$

Lateral surface area of the pet house = Area of the walls
$= 2 h (l + b)$

$= 2 \times 1 (3 + 2)$

$= 10 m^{2}$

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Sachin wants to make a pet house for his dog with length, breadth and height of 3m, 2m and 1m respectively. What is the area of walls inside the pet house that has to be painted? [3 MARKS]

Concept: 1 Mark Formula: 1 Mark Application: 1 Mark l=3,b=2,h=1 Lateral surface area of the pet house = Area of the walls =2h(l+b) =2×1(3+2) =10m2

Concept: 1 Mark
Formula: 1 Mark
Application: 1 Mark

$l = 3, b = 2, h = 1$

Lateral surface area of the pet house = Area of the walls
$= 2 h (l + b)$

$= 2 \times 1 (3 + 2)$

$= 10 m^{2}$