If the length and breadth of a rectangle are 10 cm and 20 cm, respectively, find the length of its diagonal......
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The length and breadth a rectangular field are 10 cm and 20 cm.
Length (l) = 10cm
Breadth (b) = 20cm
• We have to find the length of it's diagonal.
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Length of diagonal = \sqrt{ {length}^{2} \: + \: {breadth}^{2} }length2+breadth2
Put the known the values in above formula.
=> \sqrt{( {10)}^{2} \: + \: {(20)}^{2} }(10)2+(20)2
=> \sqrt{100 \: + \: 400}100+400
=> \sqrt{500}500
=> 22.360
=> 22.36 cm
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Length of the diagonal of the rectangle is 22.36 cm
__________ [ANSWER]
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