CarysRM2
contestada

length of edges in A: length of edges in B = 3:5
The perimeter of A is 345 mm
Work out the perimeter of B in mm.

Respuesta :

Answer:

575 mm

Step-by-step explanation:

The ratio of perimeters is the same as the ratio of sides.

let x be the perimeter of B then by proportion

[tex]\frac{3}{345}[/tex] = [tex]\frac{5}{x}[/tex] ( cross- multiply )

3x = 1725 ( divide both sides by 3 )

x = 575

Then the perimeter of B is 575 mm

Q&A Education