The total cost to paint all the 4 walls of a room with length, breadth and height as 10 m, 20 m and 5 m respectively at the rate of Rs. 10 per sq . meter is Rs.7000. State whether true or false.

True

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False

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Solution

The correct option is B
False

Given l=10 cm, b=20 cm and h=5 cm

The lateral surface area of Cuboid= 2h(l+b)= 300 $c m^{2}$

So, total cost= 300 $\times$ 10= Rs.3000

Hence, false.

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The total cost to paint all the 4 walls of a room with length, breadth and height as 10 m, 20 m and 5 m respectively at the rate of Rs. 10 per sq . meter is Rs.7000. State whether true or false.

The correct option is B False Given l=10 cm, b=20 cm and h=5 cm The lateral surface area of Cuboid= 2h(l+b)= 300 cm2 So, total cost= 300 × 10= Rs.3000 Hence, false.

The correct option is B
False

Given l=10 cm, b=20 cm and h=5 cm

The lateral surface area of Cuboid= 2h(l+b)= 300 $c m^{2}$

So, total cost= 300 $\times$ 10= Rs.3000

Hence, false.