Question

A door - frame of dimensions 5m* 4m is fixed on the wall of dimensions 10m*10m Find the total labour charges for painting the wall , if the labour charges for painting 1m^2 of the wall is Rs. 2.50

Answer 1

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Answer 2

$\underline { \blue { Dimensions \:of \:a \:Door:}}$

$Length (l) = 5 \: m \:and \: breadth (b) = 4\:m$

$\underline { \blue { Dimensions \:of \:a \:Wall:}}$

$Length (L) = 10\: m \: and \: Breath (B) = 10\:m$

$Area \:of \:the\: painting\:the \:wall \\= Area \:of \:the \:wall - area \:of \:the \:door \\= L \times B - l \times b \\= 10 \: m \times 10 \:m - 5\:m \times 4 \:m \\= 100 \:m^{2} - 20 \:m^{2} \\= 80 \:m^{2} \:--(1)$

$Labour \: charges \: of \:painting \:1 \:m^{2} \\wall = Rs \: 2.50$

$Labour \: charges \: of \: painting \: 80 \:m^{2} \\wall= 80 \times 2.50\\= Rs \:200$

Therefore.,

$\red {Labour \: charges \: of \: painting }\\\red{80 \:m^{2} \:wall}\green{= Rs \:200}$

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