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at HS 2.50 per metre is HS 20Oa) 80 m(b) 40 m(c) 20 m(d of these5.The length of a rectangle is three times of its width. If the length of the d5.The lernthen the perimeter of the rectangle is(a) 15,/10 m n 10 |
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Answer» Let the width of the rectangle be xan length of the rectangle will be 3xGiven,length of its diagonal is 6√10 cmso by Pythagoras theoremx^2 +(3x)^2 =(8√10)^2x^2+9x^2= 64010x^2=640x^2=64x=8 So breadth of the rectangle = 8cmlength of the rectangle= 3×8cm=24cmSo,Perimeter of the rectangle = 2(8+24)cm= 2×32cm=64cmHence perimeter of rectangle is 64 cm |
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