Question

нужно срочно!! даю 100 баллов жа ответ!

очень быстро и срочно нужно

Answer 1

Ответ:

Формулы:

$d = 2r \\ C = 2\pi \: r = \pi \: d \\ S = \pi \: r {}^{2}$

1.

$r = 14 \\ d = 14 \times 2 = 28 \\ C = 28\pi \\ S = \pi \times {14}^{2} = 196\pi$

2.

$d = 34 \\ r = \frac{34}{2} = 17 \\ C = 34\pi \\ S = \pi \times {(17)}^{2} = 289\pi$

3.

$C = 17\pi \\ d = 17 \\ r = \frac{17}{2} = 8.5 \\ S = {(8.5)}^{2} \pi = 72.25\pi$

4

$S = 25\pi \\ {r}^{2} = 25 \\ r = 5 \\ d = 2 \times 5 = 10\\ C = 10\pi$

5.

$r = 18 \\ d = 36 \\ C = 36\pi\\ S= {(18)}^{2} \pi = 324\pi$

Answer 2

(знак ”/” – это дробная черта)

основные формулы темы:

d = 2r

c = 2π r = π d

s = π r²

решение:

r = 14 cm. d = 34

d = 2r = 14·2=28 r = 34/2 = 17

c = 28π. c = 34π

s = π · 14² = 196π. s = π · (17)² = 289π

c = 17π s = 25π

d = 17 r² = 25

r = 17/2 = 8.5. r = 5

s = (8.5)² π = 72.25π. d = 2 · 5 = 10

c = 10π

r = 18

d = 36

c = 36π

s = (18)² π = 324π