The perimeter of a triangle is 60 cm and its sides are in the ratio 3 : 4 : 5. The length of the sides of the triangle are a,10cm, 20cm, 30cm

b,15 cm, 20 cm, 25 cm

c,20 cm, 20 cm, 20 cm

d,15 cm, 35cm, 10cm

Hey buddy, here is your answer. Hope it helps u.

Step-by-step explanation:

Let the unknown number be x

Perimeter of triangle= a+b+c

60=3x+4x+5x

60=12x

x= 60/12

X=5 cm

So the first side=3*x

=3*5=15

Second side=4*5=20

Third side=5*5=25

Answer is b

By-Kelyn

Let the sides be 3x, 4x and 5x. Then,

➝ 3x + 4x + 5x = 60 cm

It is because the total sum of the sides i.e. perimeter of the triangle is 60 cm.

➝ 12x = 60 cm

➝ x = 60 cm / 12

➝ x = 5 cm

Hence,

The required length of the sides:

And we are done! :D

⛱️

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)