August 2018 1 26 Report
1. hitunglah keliling dan luas persegi panjang dengan ukuran sebagai berikut .
a. panjang = 18 cm dan lebar = 12 cm
b. panjang = 25 cm dan lebar = 16 cm
c. panjang = 30 cm dan lebar = 15 cm
2. seorang petani mempunyai sebidang tanah yang luasnya 432 m². jika tanah tersebut berukuran panjang 24 m,
tentukan..
a. lebar tanah tersebut
b. harga tanahseluruh nya apabila akan di jual seharga Rp.150.000,00 per m².
3. sebuah persegi panjang berukuran panjang = ( 3x + 4 ) cm dan lebar = ( x + 6 ) cm . jika luas persegi panjang 392 cm² , tentukan panjang dan lebar nya .
4. keliling suatu persegi panjang adalah 72 cm dan lebarnya 8 cm kurang dari panjangnya . hitunglah panjang dan lebar nya .
5. halaman rumah berbentuk persegi panjang berukuran 90 meter dan lebar 65 meer. di sekeliling halaman itu, akan dipasangkan pagar dengan biaya Rp.135.000,00 per meter . berapakah biaya yang di perlukan untuk pemasangan pagar tersebut ?
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Andi : hi, sinta. i want to teach my little brother origami. but i don't know what kind of origami should be taught to him. do you think dinosaur origami is difficult for him ?sinta : well, i think so. what about a boat ?andi : that's a good idea. that's my brother, can you teach him ?sinta : what .... me ?andi : yup ...... riko come here. you like origami, don't you ?riko : Uhum ...andi : well, sinta will teach you how, make a boat.riko : really ?!sinta : Yup .... it's easy. listen carefully and follow me.riko : yes, I'm ready .sinta : take a half page of paper and you don't need scissors or glue to do it. now follw the steps. first, fold,the paper in half the long way , crease and unfold .riko : then.sinta : the second step , fold the sides up to the middle crease and keep it folded .riko : ok, done sinta : next, fold the corners donwn to the middle . and the do the same way are you still with me ?riko :wait ... wait can you repeat it ?sinta : sure. please fold the corners down to the middle. and do it twice .riko : got it. and what's the next step ?sinta : finally, open the middele and turn it in side out to make a boat. finish , it's simple, isn't it ?riko : thank you . i learnt a lot from you.task 12 1. who wants to teach riko origami ?2. what is the origami ?3. how many steps are they to make the origami ?4. what is the material ?5. what is the first step ?6. do they need scissors and glue ?7. what is the second step ?8. what is the final step ?
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