So 590 plus 29.5=619.50
because %100 of 590 is 590 and %20 of 50 is 29.50
Answer: H, 28.26
Step-by-step explanation:
Circle formula: A = πr^2
Diameter = 2r
π = 3.14 (Rounded)
1/2 of 6mm is 3mm.
3π^2 = 28.26 (I rounded)
So the correct answer is H.
I hope this helped!
Answer:
b) f(x)=(x+4)(x-2) 2.....
Answer:
see explanation
Step-by-step explanation:
Given A is directly proportional to r² then the equation relating them is
A = kr² ← k is the constant of proportion
To find k use the condition when r = 5, A = 75 , then
75 = k × 5² = 25k ( divide both sides by 25 )
3 = k
A = 3r² ← equation of proportion
(a)
when r = 4, then
A = 3 × 4² = 3 × 16 = 48
(b)
when A = 147 , then
147 = 3r² ( divide both sides by 3 )
49 = r² ( take the square root of both sides )
r = = 7