Isosceles 19393

How many dm2 of the area is an isosceles triangle if the angle at the base is 45˚ and the bottom is 10 cm long?

Correct answer:

S =  0.25 dm2

Step-by-step explanation:

A=45  c=10 cm  C=1802A=180245=133   c2 = a2 + a2  a=c/2=10/2=5 27.0711  S1=2a a=27.0711 7.0711=25 cm2  S=S1 dm2=S1:100  dm2=25:100  dm2=0.25 dm2=41 dm2=0.25 dm2

Try calculation via our triangle calculator.




Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
The Pythagorean theorem is the base for the right triangle calculator.
Calculation of an isosceles triangle.
See also our trigonometric triangle calculator.
Try conversion angle units angle degrees, minutes, seconds, radians, grads.

You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1   video2   video3

Related math problems and questions: