Bulatan
- 1. 120°
5
7
,
=
ℎ
2
=
90°
360°
=
90°
360°
× 2 ×
22
7
× 12
= 18.857
,
=
ℎ
2
=
120°
360°
=
120°
360°
× 2 ×
22
7
× 7
= 14.667
) ℎ ℎ ,
= + + + +
= 12 + 18.857 + 5 + 14.667 + 7
= 57.524
)
= − ∆ +
= 113.143 −
1
2
× 7 × 12 + 51.333
= 122.476
,
=
ℎ
=
90°
360°
=
90°
360°
×
22
7
× 12
= 113.143
,
=
ℎ
=
120°
360°
=
120°
360°
×
22
7
× 7
= 51.333