Question

R=14см d-? C-? S-? 2) d=34 мм R-? C-? S-?3) C=17π см d-? R-? S-?4) S=25π см2 d-? C-? R-?5) R=18 мм d-? C-? S-?​

Answer 1

Ответ:

Пошаговое объяснение:

Формулы которые используются.

R=d/2 (радиус равен половине диаметра.)

d=2*R (диаметр равен удвоенному радиусу)

С=2πR=d*π (формула нахождения длины окружности).

S=πR² (формула нахождения площади круга.)

1) R=14cм; d=14*2=28см. С=d*π=28π; S=πR²=14²π=14*14π=196π см²

2)d=34см; R=34/2=17см.; С=34π; S=17²π=17*17π=289π см²

3) С=17π см; d=C/π=17см; R=d/2=17/2=8,5см; S=πR²=8,5²π=8,5*8,5π=72,25π см²

4) R=18мм; d=2R=18*2=36см; С=d*π=36π см; S=πR²=18²π=18*18π=324π см²

Answer 2

It looks like you're asking about calculations involving the radius (R), diameter (d), circumference (C), and area (S) of circles. I'll be happy to help you with these calculations.

1. Given R = 14 cm:

   • Diameter (d) = 2 * R = 2 * 14 cm = 28 cm
   • Circumference (C) = 2 * π * R = 2 * π * 14 cm ≈ 87.96 cm
   • Area (S) = π * R^2 = π * (14 cm)^2 ≈ 615.75 cm²

2. Given d = 34 mm:

   • Radius (R) = d / 2 = 34 mm / 2 = 17 mm
   • Circumference (C) = π * d = π * 34 mm ≈ 106.81 mm
   • Area (S) = π * R^2 = π * (17 mm)^2 ≈ 907.92 mm²

3. Given C = 17π cm:

   • Diameter (d) = C / π = 17π cm / π ≈ 17 cm
   • Radius (R) = d / 2 = 17 cm / 2 = 8.5 cm
   • Area (S) = π * R^2 = π * (8.5 cm)^2 ≈ 226.98 cm²

4. Given S = 25π cm²:

   • Radius (R) = √(S / π) = √(25π cm² / π) = 5 cm
   • Diameter (d) = 2 * R = 2 * 5 cm = 10 cm
   • Circumference (C) = 2 * π * R = 2 * π * 5 cm ≈ 31.42 cm

5. Given R = 18 mm:

   • Diameter (d) = 2 * R = 2 * 18 mm = 36 mm
   • Circumference (C) = 2 * π * R = 2 * π * 18 mm ≈ 113.10 mm
   • Area (S) = π * R^2 = π * (18 mm)^2 ≈ 1017.88 mm²

Please double-check the calculations, and let me know if you need any further assistance!