Answer:
r = 4 cm
A(circle) = π·r²
= π·(4cm)²
= 3.14·16cm²
= 50.24 cm²
d = 18 in
d = 2r => r = d/2 = 18in/2 = 9 in
= 3.14·(9in)²
= 3.14·81in²
= 254.34 in²
correct
Step-by-step explanation:
to make y positive, you would divide it by -1. This makes y positive and 3 negative.
2
