4. Find the perimeter of the rectangle whose length is 15 cm and a diagonal is 17 cm.
please answer fast it's urgent
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4. Find the perimeter of the rectangle whose length is 15 cm and a diagonal is 17 cm.
please answer fast it's urgent
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Answer:
P=46cm
Length
15 cm Diagonal 17
P=2(l+w)
d=w2+l2
Solving forP
P=2l+2d2﹣l2=2·15+2·172﹣152=46cm
length=15, height=diagonal
length sq +base sq= height sq
15 sq+ b sq =17 sq
225 +b sq = 289
b sq = 64
b = 8
area of rectangle= 15 *8 = 120 m sq
perimeter of rectangle= 2(15+8)
=2*23
= 46 c.