please questions ka answer explain kar do koi
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please questions ka answer explain kar do koi
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Answer:
b) 20 sq. units
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Answer:
hence, option b is correct. 20 sq units
Step-by-step explanation:
let point A = (1,2)
so, X1= 1 and Y2 = 2
point B = (3,8)
so. X2 = 3 and Y2 = 8
AB is the diagonal of the square
AB = root over [(X2-X1)^2 + (Y2 - Y1)^2]
= √[(3-1)^2 + (8-2)^2]
=√(4+36)
=√40
=2√10
Let the side of the square is a unit
diagonal = a√2 = 2√10
so, a√2 = 2√10
a√2 = 2× √5 × √2
a = 2√5
now, area of square is a^2 unit ^2
so, (2√5)^2
= 20 sq units