Answer:
530.66 cm²
Step-by-step explanation:
First, since the formula for the area of a ball is r² x 3.14, you multiply 13 by itself. Since 13x13 is 169, you do 3.14x169. Your answer should be 530.66 cm². (i don't know what the other one is, or if it's just a separate question.)
ᑕᒪIᑕK Oᑎ ᑭIᑕ ᖴOᖇ ᑭᖇOOᖴ
᙭= -2
y+14
60%of 850
60×850÷100
=510
You have the hypotenuse and the adjacent, so use cosine.
SOHCAHTOA
Take the inverse cosine of both sides, which requires a calculator
cos(Ф) = 7/25
Ф = 73.74°
