Question

Tolong. .ya..dengan cara. .

Answer 1

2. 1/2×6cm×8cm
=48 ÷ 2 =24cm persegi

Answer 2

1) r = d : 2
= 112 : 2
= 56 cm (A)

2) L = ½ × d1 × d2
= ½ × 6 × 8
= 24 cm² (D)

3) k = phi . d
62,8 cm = 3,14 × d
d = 62,8 : 3,14
d = 20
r = d : 2
r = 20 : 2 = 10 cm (B)