Tolong Ya, Ya tau No 1-3 aja
1.
Luas yang diwarnai
= 22/7 x 14²/2 – 22/7 x 7²
= 22/7 x 196/2 – 22/7 x 49
= 22 x 14 – 22 x 7
= 22 x (14 – 7)
= 22 x 7
= 154 cm²
2.
Luas = s² – πr²
= 28² – 22/7 x 14²
= 784 – 616
= 168 cm²
3.
Luas = 14²
Luas = 196 cm²
Tolong Ya, Ya tau No 1-3 aja
1.
Luas yang diwarnai
= 22/7 x 14²/2 – 22/7 x 7²
= 22/7 x 196/2 – 22/7 x 49
= 22 x 14 – 22 x 7
= 22 x (14 – 7)
= 22 x 7
= 154 cm²
2.
Luas = s² – πr²
= 28² – 22/7 x 14²
= 784 – 616
= 168 cm²
3.
Luas = 14²
Luas = 196 cm²