Question

Find the perimeter of the rectangle whose let is 15cm and diagonals 17 cm

Answer 1

Answer:

46

Step-by-step explanation:

Length, width and diagonal form a right-angled triangle.

By Pythagoras's theorem:

$width = \sqrt({ {17}^{2} } - {15}^{2} )$

width = √64 = 8

perimeter = 2( length + width) = 2(15 + 8)

perimeter = 46 cm

Answer 2

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