Szeiścian o krawędzi 8cm rozcięto na dwa graniastosłupy trójkątne. Oszacuj czy arkusz papieru o wymi.... Question from @Dagusia97s

October 2018 1 18 Report

Szeiścian o krawędzi 8cm rozcięto na dwa graniastosłupy trójkątne. Oszacuj czy arkusz papieru o wymiarach 20cm x 30cm wystarczy na oklejenie powierzchni obu otrzymanych graniastosłupów.

anahi96

Wysokość podstawy

h²+(4√2)²= 8²

h²+32= 64

h²= 32

h= 4√2

Pole powierzchni graniastosłupa trójkątnego

P= 2*8*8+ 2* (8√2*4√2):2+ 8*8√2= 128+64+64√2= 172+64√2 (cm²)

Pole dwóch takich graniastosłupów to 344+128√2 (cm²)

20*30=600 (cm²)

√2≈ 1,4

344+128√2≈ 344+179,2= 523,2 (cm²)

600> 523,2

Odp: Wystarczy papieru.

Liczę na naj :)

2 votes Thanks 1

Popraicie błędy ?Hi Julie ! How are you ? Sorry, that I haven't written for so long. I'm recently moved to another city. Reason for move was get my mom new job .My new home is spiffy.I'm very happy with this move. My new room big. In my new room is big window that I like it . I painted walls in purple and white . On the largest wall find great portrait of Marilyn Monroe. Love my new room and home but I lack my friends. You visit me in the holidays ? We must is meet. Write to me back .Say hello to your friends. Love, XYZ

Answer

Dagusia97s October 2018 | 0 Replies

poprawicie mi błędy ? z góry dziękuję !Hi aunt ! How are you ? Sorry ,that I heven't written for so long. I write to you because quarrel with my boyfriend. He ist tall and muscular. He has got blue eyes and short, brown hair. He has got hard nature and always want to be right. The reason for our quarrel is he's always not have time for me ! However I feel bad maybe I should understand him ? Aunt you give advice me ? Write to me back. Say hallo uncle.Kisses, XYZ

Answer

Dagusia97s October 2018 | 0 Replies

Proszę o poprawienie błędów ortograficznych :D Hi Julia ! How are you ? Sorry I haven't write for so long .Did you watch LOL ? The Film there is very interesting. Last year I wrote a high school diploma. This test really is not difficult.You don't have to be afraid this test. He's really simple. I'll meet you in the holiday? Write me back. Say hello to your friends. Love, XYZ \Z góry dziękuję .

Answer

Recommend Questions

Life Enjoy

Get in touch

Social