Предмет: Математика, автор: castigo6764

P-28
A=5
B-?
S-?
Помогите срочно в течении 40 минут пж

elis302: а можно поконкретней, рисунок или полное условие задачи, а то ничего непонятно

Ответы

Автор ответа: polinakulalova
0

Ответ:

если я правильно поняла, то

Р=(а+в)•2

28=10+2в

в=9

отсюда следует, что

S=a•в

S=5•9

S=45

В=9;S=45

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