Question

permeter is 540cm. Find its area.
the area of the triangle.
6. An isosceles triangle has perimeter 30 cm and each of the equal sides is 12 cm. Find​

Answer 1

Answer:

5.peremeter = sum of all sides

P=540

S1+s2+s3=540

11 x +19 +24x=540

54x=540

X=10

S1=110

S2=190

S3=249

6.Let The Third Side Be xcm.

Now Perimeter = 12+12+x

24+x = 30

x = 6

Now Find The Area Using Herons Formula

Semiperimeter = 30/2 = 15

Sq Root(15(15-12)(15-12)(15-6) ) = Sq Root(15*3*3*9) = Sq Root(1215) = 34.85 cm^2

So Area is 34.85cm^2

 

Answer 2

Step-by-step explanation:

It looks like that there is an incomplete question 1

Answer of question 2)

Let The Third Side Be xcm.

Now Perimeter = 12+12+x

24+x = 30

x = 6

Now Find The Area Using Herons Formula

Semiperimeter = 30/2 = 15

Sq Root(15(15-12)(15-12)(15-6) ) = Sq Root(15*3*3*9) = Sq Root(1215) = 34.85 cm^2

So Area is 34.85cm^2