Question

11. The circumference of Mars is about 10,664 km. Find the diameter of Mars to the nearest km. (1 point)

17.256 km

3,396 km

333 km

259 km

12. Estimate the area of a circle with a radius of 27 meters. Use Start Fraction 22 over 7 End Fraction for pi. (1 point)

258 square meters

1,125 square meters

2,291 square meters

5,253 square meters

13. The drawing is composed of a rectangle and a semicircle. Find the area of the figure to the nearest unit. (1 point)

599 cm2

217 cm2

307 cm2

689 cm2

Answer 1

Answer:

11. 3,396

Step-by-step explanation:

Given:

Circumference of Mars = 10,664 km

Determine the diameter of Mars.

D = 2r

C=2πr

Solution:

Since we do not have the value of r, we will solve for r in terms of C.

C=2πr

10,644 = 2πr

r = 10644/ 2π

r = 1694.04 km

Now that we know the value of r, we can solve for d.

D = 2r

D = 2( 1694.04km)

D = 3,388.09 km

The nearest value is 3,396 km on the choices, but the answer rounded to the nearest km is 3,388 km

Answer 2

Umm I think 17.256 I could be wrong tho