asked 129k views
5 votes
perimetrul unei gradini in forma de derptunghi este de 800m afla laturile gradini stind ca lungimea este de 3 ori mai mare decat latimea

asked
User Steffen
by
8.4k points

1 Answer

4 votes

L = Latura mare

l = latura mica

P = L + l + L + l = 2L + 2l

P = 800 m

L = 3 × l

2(3 × l + l) = 800 m

2 × 4 × l = 800 m

8 × l = 800 m

l = 800 : 8

l = 100 m

L = 3 × l

L = 3 × 100

L = 300 m

answered
User Mohd Shibli
by
7.9k points
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