Find the perimeter of a rectangle whose length is 40 cm and its diagonal is 41 cm
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12
Answer:
diagonal = 41 cm
one side = 40 cm
by Pythagoras theorem
the other side = √(41×41 - 40×40)
= √(1681 - 1600)
= √(81)
= 9 cm
perimeter = 2(9+40)
= 2 × 49
= 98 cm Ans.
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3
Answer:
Refer to the attachment above. ⬆️
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