Question

kakk pliss bantuu Besok di kumpull!!​

Answer 1

Verified answer

Anggap aja lingkaran di atas itu lingkaran sempurna hehe

2.

a) r = 14 cm

π = 22/7

d = 2r = 2 × 14 = 28 cm

L = πr²

L = 22/7 × 14²

L = 22/7 × 196

L = 22 × 28

L = 616 cm²

K = πd

K = 22/7 × 28

K = 22 × 4

K = 88 cm

b) r = 100 cm

π = 3,14

d = 2r = 2 × 100 = 200 cm

L = πr²

L = 3,14 × 100²

L = 3,14 × 10.000

L = 31.400 cm²

K = πd

K = 3,14 × 200

K = 628 cm

c) d = 35 cm

r = d/2 = 35/2 = 17,5 cm

π = 3,14 atau 22/7

L = πr²

L = 3,14 × 17,5²

L = 3,14 × 306,25

L = 961,625 cm²

K = πd

K = 22/7 × 35

K = 22 × 5

K = 110 cm

d) d = 75 cm

r = d/2 = 75/2 = 37,5

π = 3,14

L = πr²

L = 3,14 × 37,5²

L = 3,14 × 1.406,25

L = 4.415,625 cm²

K = πd

K = 3,14 × 75

K = 235,5 cm