find the perimeter area and length of diagonals of a rectangle having length = 20 m breadth = 15 M show the answer
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Answered by
4
L= 20m
b=15m
p 2 (l+b)
2×35
70
A =l×b
20×15
300m2
b=15m
p 2 (l+b)
2×35
70
A =l×b
20×15
300m2
pankaj9693:
This is wrong In my math book ans given120 cm
ans kabhi kabhi galat bhi ho sakta
book ka
No isit not possible that in my math book and is wrong
he is asking the diagonal also lol
the ans's right
Answered by
2
Perimeter = 2(l + b)
2(20m + 15m)
2(35m)
70m
Area = l x b
20m x 15m
300 m^2
Diagonals = Divide the rectangle into two right triangles
we know length and breadth
that means we already know height and base of the triangle
apply pythagoras theorem
20^2 + 15^2 = Hypotenuse^2
400 + 225 = Hypotenuse^2
625 = hypotenuse^2
Root 625 = Hypotenuse
25 = hypotenuse = Diagonal
Both diagonals are equal in a rectangle
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