Mae hwn yn estyniad. Peidiwch frysio, a pheidiwch dyfalu os dydych chi ddim yn gwybod.
Estyniad arwynebedd petryal

Quiz
•
Mathematics
•
7th Grade
•
Hard
T Wood
Used 5+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 mins • Ungraded
Iawn
Iawn
2.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Beth yw arwynebedd y petryal yma?
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Perimedr sgwâr yw 30 cm
Beth yw arwynebedd y sgwâr?
49.5 cm²
52.5 cm²
48.25 cm²
15 cm²
56.25 cm²
4.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Dimensiynau papur A4 yw 21 cm gan 297 mm.
Beth yw arwynebedd papur A4 mewn cm2?
Peidiwch rhuthro. Cyfrifwch yn ofalus!
5.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Mae un tun o baent efo digon i baentio 5 m2 o wal.
O leiaf sawl tun sydd angen i baentio wal sydd efo uchder 2.5 m a hyd 5 m?
6.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Mae rhedfa (runway) efo lled 80 m a hyd o 3 km. Beth yw arwynebedd y tarmac sydd angen ar gyfer y rhedfa mewn km2 ?
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Mae hyd y petryal 2 cm yn fwy na'r lled, n
Arwynebedd y petryal yma yw 24 cm2
Beth yw gwerth y lled, n?
n = 4 cm
n = 5 cm
n = 7 cm
n = 8 cm
n = 12 cm
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