Matematika Sekolah Menengah Pertama Hitunglah luas per- mukaan dari bangun di samping! 24 cm 7 cm
Hitunglah luas per- mukaan dari bangun di samping! 24 cm 7 cm Jawaban: Lp: 7 0 4 c m ^ 2 p e n j e l a s a n d e n g a n l a n g k a h - l a n g k a h : R u m u s l u a s p e r m u k a a n k e r u c u t a d a l a h : L P = π × r × ( r + s ) [tex]s = \sqrt{ {r}^{2} + {t}^{2} } = \sqrt{ {7}^{2} + {24}^{2} } = \sqrt{49 + 576} = \sqrt{625} = 25 \\ \\ lp = \pi \times r \times (r + s) \\ lp = \frac{22}{7} \times 7 \times (7 + 25) \\ lp = 22 \times 32 \\ lp = 704 {cm}^{2} [/tex]
