The area of a circle is 379.94m². Using 3.14 for π, find the circumference of the circle.

69.08

Step-by-step explanation:

The equation for circumference is C = 2πr and the equation for area is A = πr^2. First, do 379.94 = 3.14r^2. This means that r^2=121 so r=11. Now plug it in to C=2πr so it becomes C=2π(11). So C=22π or 69.08.

Question:

Find the circumference of the circle. Use 3.14 for π.

5 in.

15.7 inches

Step-by-step explanation:

Identify the diameter of the circle.

d=5 in.

Use the formula.

C=πd

C=π(5)Substitute 5 for d.

C≈3.14(5)Substitute 3.14 for π.

C≈15.7Multiply.

The circumference of the circle is about 15.7 inches.

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.

can you complete your sentence? i could !