Question

The area of the triangle whose sides are 42 cm, 34 cm and 20 cm in length is 1 point.​

Answer 1

Answer:

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Step-by-step explanation:

Sides of the triangle are a=42,b=34,c=20

According to Hero's formula,

Area of the triangle, A=s(s−a)(s−b)(s−c)

Where s=2a+b+c=242+34+20=48

Now,

A=48(48−42)(48−34)(48−20)

A=48(6)(14)(28)

A=(6×8)(6)(14)(14×2)

A=14×6×4

A=336cm2

Let the height corresponding to longest side (42cm) is h

Area =21×base×height

21×42×h=336

h=42336×2=16 cm

Answer 2

Answer:

H=336/21

Step-by-step explanation:

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