The diameter of the circle is 8 inches. what is the area?

50.3in² ( to 1 decimal place )

the area of a circle is calculated using

area = πr² ( where r is the radius)

here diameter = 8 ⇒ r =8/2 = 4

area = π × 4² = 16π = 50.3 in²

step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2