Q. 95.0( 1 Vote )

# A container of side 3.5m is to be painted both inside and outside. Find the area to be painted and the total cost of painting it at the rate of ₹75 per square meter.

Answer :

Given:

side of container (a) = 3.5cm

Area of cubical box to be painted both sides = 12a^{2}

= 12(3.5)^{2}

⇒ Area of cubical box to be painted both sides = 147m^{2}

total cost of painting it at the rate of Rs75 per square meter

then total cost of painting painted box = 147 × 75 = Rs11025

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