Question

find the area of a isosceles triangle whose same sides are 13 centimetre and base is of 20 CM​

Answer 1

Answer:

given  

base = 20 cm

side measure = 13cm  

we will do this by using herons formula  

S = a + b +c / 2  

S = 13 + 13 + 20 / 2  

S = 46. /2

S = 23  

S is side 23 cm

we use herons formula  

√S ( S - A) ( S - B) ( S - c)  

√23 ( 23 -13) ( 23 -13) ( 23 - 20)

√23 ( 10 * 10 * 3 )

√23 ( 2*5. 2*5 *3 )  

10 √23 * 3  

10 √69  

hence you can also write the answer 10√69  

or you can write the answer by simplifying the root is 83.03 cm

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Answer 2

Step-by-step explanation:

This is the ans. I hope it will be helpful for u... Make construction in triangle...