jawab dengan caranya ya no 2-4

2. L = Π × r²
= 22/7 × 28 ×28
= 2464

3. L = ½ × d1 × d2
= ½ × 80 × 65
= 2600

4. L= Π × r²
= 22/7 × 14 × 14
= 616

2. π x r x r = 22/7 x 28 x 28= 2464 (C)
3. diagonal 1 x diagonal2= 80x65= 5200 (A)
4. π x d²= 22/7 x (14)²=616 (d)