QuiZ - Universityku

1. Tentukan diameter lingkaran jika keliling lingkarannya 44 cm!
2. 80² + 20² – 100²

Nt:

Akhirnya bisa grade 4

QuiZ

d = k ÷ π

= 44 ÷ 22/7

= 44 × 7/22

= 2 × 7

= 14 cm

80² + 20² – 100²

= ( 80.80 ) + ( 20.20 ) – ( 100.100 )

= 6.400 + 400 – 10.000

= -3.200

$1. : d = k div pi$

$d = 44 div frac{22}{7}$

$d = 44 times frac{7}{22}$

$d = 2 times 7$

$d = 14 : cm$

– – – – – – –

2. 80² + 20² – 100² =

= (80 × 80) + (20 × 20) – (100 × 100)

= 6.400 + 400 – 10.000

= 6.800 – 10.000

= –3.200