Jawaban:
a. diameter lingkaran:
21x2=42 cm
keliling lingkaran=
phi x d
22/7x42=312 cm
luas lingkaran:
phi x r x r
22/7 x 21 x 21=1386 cm2
b. diameter lingkaran:
8x2=16cm
3,14x16
50,24cm
luas =
3,14 x 8x8
=200,96cm2
c. jari-jari lingkaran=
r=d:2
=20:2
=10cm
keliling=
k=πxd
k= 3,14x20
k= 62,8cm
luas /=
πxrxr
3,14x10x10
=314cm²
d. diameter=
K:π
44cm : 3,14
14,01cm
jari jari=
d:2
14,01:2
7,005cm
π x r xr
3,14 x 7,005 x 7,005
=154,07cm²
e. jari jari
√L:π
√314:2
√157
= 157cm
diameter
= 157x2
=314cm
keliling :
πxd
22/7x 314
985,96cm.
semoga membantu, Semangat terus ya~✨
jangan lupa follow :3✨
Jawab:
semoga membantu # maaf klo salah
thanks to thr poin. hope you have a nice day :D
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Jawaban:
a. diameter lingkaran:
21x2=42 cm
keliling lingkaran=
phi x d
22/7x42=312 cm
luas lingkaran:
phi x r x r
22/7 x 21 x 21=1386 cm2
b. diameter lingkaran:
8x2=16cm
keliling lingkaran=
3,14x16
50,24cm
luas =
phi x r x r
3,14 x 8x8
=200,96cm2
c. jari-jari lingkaran=
r=d:2
=20:2
=10cm
keliling=
k=πxd
k= 3,14x20
k= 62,8cm
luas /=
πxrxr
3,14x10x10
=314cm²
d. diameter=
K:π
44cm : 3,14
14,01cm
jari jari=
d:2
14,01:2
7,005cm
luas =
π x r xr
3,14 x 7,005 x 7,005
=154,07cm²
e. jari jari
√L:π
√314:2
√157
= 157cm
diameter
= 157x2
=314cm
keliling :
πxd
22/7x 314
985,96cm.
semoga membantu, Semangat terus ya~✨
jangan lupa follow :3✨
Jawab:
a. diameter lingkaran:
21x2=42 cm
keliling lingkaran=
phi x d
22/7x42=312 cm
luas lingkaran:
phi x r x r
22/7 x 21 x 21=1386 cm2
b. diameter lingkaran:
8x2=16cm
keliling lingkaran=
3,14x16
50,24cm
luas =
phi x r x r
3,14 x 8x8
=200,96cm2
c. jari-jari lingkaran=
r=d:2
=20:2
=10cm
keliling=
k=πxd
k= 3,14x20
k= 62,8cm
luas =
πxrxr
3,14x10x10
=314cm²
d. diameter=
K:π
44cm : 3,14
14,01cm
jari jari=
d:2
14,01:2
7,005cm
luas =
π x r xr
3,14 x 7,005 x 7,005
=154,07cm²
e. jari jari
√L:π
√314:2
√157
= 157cm
diameter
= 157x2
=314cm
keliling :
πxd
22/7x 314
985,96cm.
semoga membantu # maaf klo salah
thanks to thr poin. hope you have a nice day :D