Question

a triangle shaped land has the sides in the ratio 3:5:7, if its perimeter is 300 meter . what will be the area of the land ?​

Answer 1

Answer:

Pteridophytes are considered as the first plants to be evolved on land: ...

They are cryptogams, seedless and vascular: ...

The plant body has true roots, stem and leaves: ...

Spores develop in sporangia: ...

Sporangia are produced in groups on sporophylls: ...

Sex organs are multicellular: ...

They show true alternation of generations:

Answer 2

Answer:

1500√3

Step-by-step explanation:

Let the common factor be x

Then 1st side is 3x

2nd side is 5x

3rd side is 7x

Now according to question

3x+5x+7x=300

15x=300

x=300/15

x=20

1st side is 3×20=60

2nd side is 5×20=100

3rd side is 7×20=140

Now the area

s=1st side+2nd side+3rd side/2

s=300/2

s=150

now

area=√s(s-a)(s-b)(s-c)

=√150(150-60)(150-100)(150-140)

=√150×90×50×10

=1500√3