Question

l=L:2-10 P=10,05 Aflati L si l

Answer 1

latimea = L : 2 - 10

P = 10,05 u.m. ( unitatea de masura )

Perimetrul dreptunghiului = 2 × ( L + latimea ) = 10,05

10,05 : 2 = 5,025 → semiperimetrul = suma dintre lungime si latime

L + L/ 2 - 10 = 5,025

2 L + L = 2 × (5,025 + 10 )

3 L = 2 × 15,025

L =30,050 : 3

L = 10,016

latimea = 10,016 : 2 - 10 = 5,008 - 10 = - 5,008