kgrace628 kgrace628

02-03-2021
Mathematics

contestada

PLEASE PLEASE HELP. I’ve wasted so many points on this problem :(

PLEASE PLEASE HELP Ive wasted so many points on this problem class=

Respuesta :

haileybeauchemin620 haileybeauchemin620

02-03-2021

Answer:

13 cm

Step-by-step explanation:

A^2+12^2=15^2

A^2+144=225

A^2=81

A=9

9x2=18

31-18=13 cm

Find the perimeter of a rectangle whose width is 3 cm and whose diagonal is 3 √5 cm long.

A^2+3^2=3√5^2

A^2+9=45

A^2=36

A=6

3+3+6+6=18 cm

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