Question

Помогите решить 4 6 ​

Answer 1

4. P = 2(a+b)

80 = 2(3x+5x)

80= 16x |:16

x = 5

3x = 5*3=15

5x = 5*5=25

6.

x+x+x=24

3x = 24

x = 8 — сторона

P = 8*4=32