Question

What is the perimeter of the following polygon?


50 units

48 units

47 units

46 units

Answer 1

You should use Pythagoras theorem for this. Do you know how?

Answer 2

Isn't it C=a+b ?

Answer 3

No c^2 = a^2 + b^2

Answer 4

Okay so c is?

Answer 5

Half the base = 8 units. Let this be a.
The line that bisects the base is 15 units and is perpendicular to base. So Pythagoras theorem can be used here to find the length of the two equal sides.

Answer 6

Let 15 units be b.
Let length of the equal sides be c.
a^2 + b^2 = c^2
8^2 + 15^2 = c^2
64 + 225 = c^2
c^2 = 289
c = sqrt289
= 17
Finding the perimeter should be easy now.

Answer 7

Did you get the answer?

Answer 8

wait @anncandy

Answer 9

I'm still working on it, I'm not very good at geometry.

Answer 10

pratu was the corect

Answer 11

Is it 48units?

Answer 12

No, its 50 units. You must have made some addition mistake.

Answer 13

Can you explain to me how'd you get your answer?