Question

a square picture frame has sides of 0.7 meters.If the cost of a coloured paper is 20 per meter,what is the cost of putting coloured paper around the frame

Answer 1

let the square side is 10m
area of square =10×10=100sqm
totel side is from frame 10.7m then
area of sq with frame =10.7×10.7=114.49sqm
so area of frame=114.49-100=14.49sqm
totel coast= 14.49×20=289.80 ruppes

Answer 2

Hey There!

$area \: of \: frame=(side)^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (0.7)^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =0.49 {m}^{2}$

$required \: cost= \frac{0.49}{20} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{49}{20}( \frac{1}{100} )$


$= \frac{2.45}{100}$

Hence, Required Amount is 2.45 paise






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