Question

1.The sides of a triangle are 25 cm,17 cm and 12 cm. Then area of the triangle is
(1 Point)​

Answer 1

Answer:

Area of a Triangle is 90cm^2

Step-by-step explanation:

Given, let a=25cm, b=17cm, c=12cm be the all sides of triangle

we know the formula-

area (triangle) = [s(s-a)(s-b)(s-c)]^(1/2)       ------(1)

now, s =   (a+b+c)/2   =   (25+17+12)/2  =  54/2  =  27cm

put the above values in equation (1)

area (triangle) =  [27*(27-25)*(27-17)*(27-12)]^(1/2)

                       =  [27 * 2 * 10 * 15]^(1/2)

                       =  [8100] ^ (1/2)

                       =  90cm^2