Answer:
yes
Step-by-step explanation:
because area of sphere equals =

so if we doubled the radius the surface area will be doubled
Answer:
Step-by-step explanation:
Answer:
x = 117km
Step-by-step explanation:
a1 = 18 km
q = 90% = 90/100 = 0.9
a2 = a1 • q = 18 • 0.9 = 81/5 = 16.2 km
a3 = a2 • q = 16.2 • 0.9 = 729/50 = 14.58 km
n = 10
x = a1 • q^n - 1/q - 1 = 18 • 0.9^10 - 1/0.9 - 1 = 117km
Answer is - 10
Step-by-step explanation:
Let the missing number be ‘x’
-8-x = 2
-x = 2 + 8
-x =10
x = -10