Question

Tolong poinnya besar 27 loh

Answer 1

1. PQ= 10dm    L 78.5
SATU nomor cukup yaa

Answer 2

1) MQ = 5 dm
PQ = 2×5 = 10 dm
L = 3,14 × 5 × 5 = 78,5 dm²

2) MQ = 8dm
PQ = 2×8 = 16 dm
L = 3,14 × 8 × 8 = 200,96 dm²

3) MQ = 14 cm
PQ = 14 × 2 = 28 cm
L = 22/7 × 14 × 14 = 616 cm²

4) PQ = 35 cm
MQ = 35 ÷ 2 = 17,5 cm
L = 22/7 × 17,5 × 17,5 = 962,5 cm²

5) PQ = 9 dm
MQ = 9 : 2 = 4,5
L = 3,14 × 4,5 × 4,5 = 63,585

6) MQ = 42 ÷ 2 = 21
L = 22/7 × 21 × 21 = 1386

7) L = 22/7 × r²
1386 = 22/7 × r²
r² = (1386 × 7) ÷ 22
r = √ 441 = 21 cm = MQ
d = 21 × 2 = 42 cm = PQ

8) L = 3,14 × r²
628 = 3,14 × r²
r² = 628 ÷ 3,14
r = 10√2 = MQ
d = 20√2 = PQ

9) L = 22/7 × r²
3850 = 22/7 × r²
r² = (3850 × 7) ÷ 22
r² = √