Question

No.5
AB and CD are vertical poles fixed to the ground.
Find the length of the wire AC

Answer 1

Answer:

We have,

AB=55m

BD=60m

DC=66m7

AC=?

AD=24cm.

Construction:- Meet A to any point E line CD.

Then,

AE=60m

DE=AB=55m

Now,

CE=CD−DE

CE=66−55

CE=11m

So,

InΔACE

Using Pythagoras theorem,

AC² =AE²+EC²

AC² =60²+11²

AC² =3600+121

AC²=3721

AC=61m.

Hence, this is the answer.

Answer 2

Answer:

h²=p²+b²

h²=(66-55)²+60²

h²=11²+60²

h²=121+3600

h²=3761

h=√3761

h=61cm

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