A right triangle has sides of length 3 ft., 4 ft., and 5 ft. What is its perimeter? What is its area?
2 answers:
The triangles area would be 3 x 4 = 12 / 2 = 6.
The perimeter would be 12.
Perimeter would be 3+4+5 which is 12ft. Area would be base x height divided by 2. So 3x4 divided by 2 is 6ft.
You might be interested in
Step-by-step explanation:
x = number
3x - 15 = (x - 12)×-4 or (12-x)×-4
3x - 15 = -4x + 48 or -48 + 4x
7x = 63, x = 9 or
33 = x
#3. Plugging the point (3,0) into any of the equations except the third one gives an invalid answer.
Answer:
First off if you want this answered make sure it's clear when your multiplying or using X
<span>No. Its x=4. You couldn't cut the box to much lower without it being absurd.
l
</span>
3x+4x+5x=90
combine like terms
12x = 90
divide by 12
x = 7.5
sides: 3(7.5) ,4(7.5) ,5(7.5)
22.5, 30, 37.5
