Question

Ini yang no 6 sampai no 8

Answer 1

6) L = 2 × ½ × phi × r²
= 1 × 22/7 × 21 × 21
= 1386 cm²

7) L = 3 × ½ × phi × r²
= 3/2 × 22/7 × 7 × 7
= 231 cm²

8) L = 4 × ½ × phi × r²
= 2 × 22/7 × 5,6 × 5,6
= 44 × 0,8 × 5,6
= 197,12 cm²