Question

find the triangle when three sides is 10cm, 12cm and 18cm

Answer 1

Answer:

if u need area then u need to use herons formula .It is used only when three sides are given that is √s(s-a)(s-b)(s-c)

Step-by-step explanation:

here s means semi perimeter that is half of perimeter

Answer 2

Given :   three sides of triangle  10 cm 12cm 18cm​

To Find   :  area of triangle

Solution:

sides of triangle  10 cm 12cm 18cm​

a = 10

b = 12

c = 18

s = semi perimeter = (10 + 12 + 18)/2  =  20

Area of Triangle  = √s(s-a)(s-b)(s-c)

= √20(20-10)(20-12)(20-18)

= √20 * 10 * 8 * 2

= √20 * 20 * 2 * 2 * 2

= 40√2

Area of Triangle = 40√2 cm²

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