Предмет: Математика, автор: prodanoksana7

обчисліть площу круга радіус якого дорівнуй 14 см ​

jekadva: S=πr² -площадь круга
ВикаБач: S=п*R^2=196п=615,75... кв.см
dsergey72: 3,14×196 ???
ВикаБач: 3,1415926535897932384626433832795..... * 196=615,75.....

Ответы

Автор ответа: dsergey72
1

Відповідь:

Покрокове пояснення:

S=πR*2

S=3,14×14*2=3,14×196=615,44

ВикаБач: =615.75... п=3,1415926535897932384626433832795.....
dsergey72: )))
dsergey72: 3,1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 8214808651 3282306647 0938446095 5058223172 5359408128 4811174502 8410270193 8521105559 6446229489 5493038196 4428810975 6659334461 2847564823 3786783165 2712019091 ....
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Задание


English Tenses

Test

1.'We'd better take a taxi to the station' ' Yes, the train..... in 15 minutes'

a.has left

b. wiil have left

c. leaves



2.'Where is the newspaper?' 'I threw it away. I thought you.....reading it.'

a.finished

b. have finished

c. had finished



3.'There's someone here to see you.' 'Oh, that .... my sister. Send her in.'

will be
was
will have been


4.'Whose is this earring?' 'I don't know. I found it when I....the house.'

a. was cleaning

b. am cleaning

c. had cleaned



5. 'That.....like Dad's car.' 'It is. He must have finished work early.'

a. sounds

b. has sounded

c. had sounded


6. 'Is that a new jumper?' 'No. I.....it from Laura yesterday.'

a. have borrowed

b. borrowed

c. had borrowed



7.'When did you speak to Sue?' 'I met her as I ....to work.'

a.am walking

b.had walked

c.was walking

bh

8.Joanne is a secretary, isn't she?' 'Yes. She...............as a secretary for seven years.'
a.works

b.is working

c.has been working



9.'Is Katie enjoying her university course?' 'Yes. She.............. the lectures very interesting.'

a. found

b. finds
c. had found



10.'Cathy doesn't study enough.' 'I know. I'm afraid she.... her exam.'

a. won't be passing

b. won't pass

c. won't have passed
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