Предмет: Математика, автор: egorovk214

Здравствуйте подскажите пожалуйста
9) Используя формулы , вычисли периметры

Приложения:

Ответы

Автор ответа: lubovabdualieva
7

Ответ:

P=(a+b)*2 P =(5+4)*2=18 см. P=a*4 P=9*4=36дм P=a+b+c P=3+4+5=12м

Похожие вопросы
Предмет: Українська мова, автор: Irinalev2306
Предмет: Английский язык, автор: Funt1k228
1. ______ is a piece of cloth used for drying something.
A) tie B) flannel C) toilet paper D) towel
2. ______ is a piece of cloth you use in bathroom to wash yourself.
A) toilet paper B) towel C) flannel D) scales
3. My friend weighs 120 kilograms, and he has ______ which help him
to know how much he weighs.
A) comb B) scales C) razor D) watch
4. ______ is a substance that you use to wash yourself with.
A) soap B) towel C) flannel D) tile
5. ______ is a brush for cleaning your teeth.
A) toothbrush B) hairbrush C) paintbrush D) toothpaste
6. ______ is a sharp instrument for removing hair, especially from a
man’s face.
A) scissors B) razor C) comb D) shaving-foam
7. ______ is liquid soap used for washing your hair.
A) cream B) shaving-foam
C) shampoo D) soap
8. ______ is a thing that you stand under to wash your whole body.
A) toilet B) sink C) bathtub D) shower
9. ______ is a bar that you use to hang things on.
A) towel-rail B) sink
C) bathtub D) laundry basket
10. ______ is a piece of plastic or metal that you use to make your hair
tidy.
A) comb B) razor C) razor-blade D) scissors
11. ______ is a long large container that you fill with water to sit in and
wash yourself.
A) laundry basket B) bathtub
C) sink D) toilet
12. ______ is a room where you can have a shower.
A) dining-room B) bathroom C) bedroom D) kitchen
13. ______ is the thing in a bathroom or kitchen, where you wash you
hands, face etc.
A) refrigerator B) bathtub C) sink D) toilet
14. The floor and walls of bathroom is covered by ______.
A) papers B) carpets C) tiles D) towels
15. ______ is a brush that is used for cleaning your nails.
A) hairbrush B) nail cleaner C) toothbrush D) nail brush