Question

The length of two sides
of a triangle are 12cm and 15
cm.Between what two
measures should the length of
the third side.​

Answer 1

Answer:

Let AB,BC and CA are the sides of triangle ABC

Given that,

Let AB=15cm,BC=12cm and Third side CA=?

Then, We know that

CA=AB−BC

CA=15−12

CA=3cm.

And

CA=AB+BC

CA=15+12

CA=27cm.

So the third side CA must lie between 3<CA<27cm.

Step-by-step explanation:

Mark my answer the brainliest please

Answer 2

Step-by-step explanation:

it would have been better if you have mentioned a figure...

if its a right angle triangle then you can use a trigonometry formula like h²=p²+b² or,

area of right angle triangle =1/2 (b×h)