Question

* the sides of triangle in the ratio
3:5:7: & its perimeter
is 20cm find its area.​

Answer 1

Answer:

32.40 or √1050

Step-by-step explanation:

given

sides of a triangle

a. 3

b. 5

C. 7

perimeter is 20 to finder area of it

by herons formula

first we will take out semi perimeter

we will divide perimeter by 2

so

20/2

is 10

10 is the semi perimeter

hero's formula

is √[s(a-10)(b-10)(c-10)]. { s is perimeter}

so it will be

√[10(10-3)(10-5)(10-7)]

√[10*7*5*3]

√1050

32.40 is the answer