Question

Area of a triangle with perimeter 42 cm and length of two sides 18 cm and 10 cm is given
by ....​

Answer 1

Answer:

perimeter = 42 cm

first side = 18 cm

second side = 10 cm

first we find third side

so add both sides of triangle

18+10=28

now we substract it

42-28=14

so the third side = 14cm

and then you find the area of triangle whose sides are 18,10,14

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