Answer:
6. 19.63 m²
7. 1661.9 cm²
I guess mali po yung choices. ^_^
Step-by-step explanation:
FORMULA OF AREA OF A CIRCLE:
If the given is radius:
[tex]a = \pi {r}^{2} [/tex]
If the given is diameter:
[tex]a = \pi( \frac{d}{2} )^{2} [/tex]
THEREFORE,
6. A= π(d/2)²
A= 3.1416 (5/2)²
A= 19.63
7. A= π(d/2)²
A= 3.1416 (46/2)²
A= 1661.9
