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x - 5 - krótszy bok = 3,5
4x-10=24
4x=24+10
4x=34
x=8,5
Pole:
P= a * b
P = 8,5 * 3,5 = 29.75
Pozdro :)
a=x
b=x-5
24cm=2x+2×(x-5)
24cm=2x+2x-10
24cm+10cm=4x
34cm=4x /÷4
x=8,5
a=8,5
b=8,5-5=3,5
P=a×b
P=8,5×3,5
P=29,75
Pozdrawiam:
mrozo
2x + 2x+10 = 24
4x = 24 - 10
x = 3,5
x+5 = 8,5
a = x+5
b = x
Rozwiązanie :
P = a × b = 8,5 × 3,5 = 29,75