Answer:
40 cm²
Step-by-step explanation:
Given the ratio of radii = a : b , then
ratio of areas = a² : b²
Here ratio of radii = 1 : 2
ratio of areas = 1² : 2² = 1 : 4
Thus
surface area of large sphere = 4 × 10 = 40 cm²
i have no idea what question you need answered
X= 1/2 and use photomath it tells you the answer and show you how it's done
I=PRT
I=interest
P=principal
R=rate in deciaml
t=time in years
12 months per year
I=800(0.08)(9/12)
I=(64)(3/4)
I=48
interest earned is $48
