Two sides of a triangle are 12cm and 5 cm and its perimeter is 30 cm then the third side will be

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Question 23 Exercise 10.1

Answer:

Solution:

Let the length of the third side be x cm.

The length of the other two sides is 12 cm and 14 cm.

Now, the Perimeter of triangle = 36 cm

$12+14+x=36$

$26+x=36$

$x=36-26=10$

Thus, the length of third side is 10 cm.

Video transcript

Hello students, welcome to the Lido learning. So here the question is two supplementary angles are Phi x minus 82 degrees + 4 x + 73 degrees. So here we have to find the value of the X. So let us write it starts the answer. So here solution is supplementary angles are 180 degrees, right? So here the equation is 5X minus 82 degrees plus 44 x + 73 degrees is 180 degrees. So you're freaking observe 9x minus 9 9 x minus 9 is equal to 180 degrees. So 9 x if we sent to the right-hand side we get 9x is equals to 1 89. So here if we send mine from multiplying to the right-hand side dividing. Sorry. Sorry. Sorry dividing X equals to one eighty-nine by nine is equal to the answer the final answer we get the x value is 21 degrees. Thank you for watching our video. A subscriber to our Channel and feel free to ask doubts in the comment section below. Thank you.