Question

Adjacent sides of parallelogram are 11cm and 17cm It length of one diagonal is 26 find the length of other diagonal​

Answer 1

Answer:

h=11cm

b=17cm

1 diagonal=26cm

26=11+17

26=28

=28/26

=14/13

Answer 2

Answer:

Question:-

1. Adjacent sides of parallelogram are 11cm and 17cm. If the length of one of its diagonal is 26cm, find the length of the other.

To find,

• Length of the other diagonal

Solution:-

➪ BD = 26

➪ OB = 13cm = OD

Apollonius theorem,

➪ AB² + BC ² = 2AO² + 2OD²

➪ 11² + 17² = 2AO² + 2(13)²

➪ 121 + 289 = 2AO² + 2(169)

➪ 2AO² + 338 = 410

➪ 2AO² = 72

➪ AO2 = 36

➪ AO = 6

➪ AC = AO + OC

= 6 + 6

= 12cm