A circle with radius of \greenD{1\,\text{cm}}1cmstart color #1fab54, 1, start text, c, m, end text, end color #1fab54 sits inside a \blueD{3\,\text{cm} \times 3\,\text{cm}}3cm×3cmstart color #11accd, 3, start text, c, m, end text, times, 3, start text, c, m, end text, end color #11accd rectangle.

8.86 cm

You calculate the whole figure first, including unshaded area, which is: 3cm x 4 cm=12cm.

Next, calculate the inner figure which is just 1 cm, so you would do pi x 1 x 1=1 pi cm. Now subtract these two totals together (12-3.14) and you will end up with 8.86 cm.

THIS ANSWER IS CORRECT AS I JUST USED THE HINTS ON KAHN ACADEMY AND THEY GAVE THIS ANSWER!

Yo the answer is 5.86, I just got it right on Khan

Step-by-step explanation:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

step-by-step explanation: