3 years ago

If the radius of a circle is 11 cm, what is the area of the circle?

Mathematics

2 answers:

il63 [147K]3 years ago

8 0

Area=22\7 x r x r
22\7 x 11 x 11
answe=380.285714
=380 square cm

andrey2020 [161]3 years ago

4 0

A=πr^2
A=3.14(11^2)
A=3.14(121)
A=379.94 which is simplfied to 380

You might be interested in

PLEASE HELP!!

Tems11 [23]

For 70 people i would say ab 445

4 0

3 years ago

In a class there are 15 students. 8 of them like playing soccer, 6 of them like swimming, and 2 like both and swimming and playi

xenn [34]

Answer:

6+8-2=12, 15-12=3 answer=3

5 0

2 years ago

X^2-7x+1=0<br> using quadratic formula

bezimeni [28]

This is the answer in exact form

4 0

3 years ago

jada can write 3 1/4 pages in 8 minutes. At this rate, how many pages could jada write in 24 minutes?

makkiz [27]

Answer:

9 3/4 pages = x

Step-by-step explanation:

$\frac{pages}{minutes} = \frac{pages}{minutes}$ change 3 1/4 to a decimal

$\frac{3.25}{8} = \frac{x}{24}$

$3.25(24) = 8x$

$78 = 8x$

$\frac{78}{8} = x$

$9.75 = x$

$9\frac{3}{4} =x$

working with the fraction

3 1/4 /8 = x/ 24

3 1/4 (24) = 8x

13/4 (24) = 8x

316/4 = 8x

78 = 8x

78/8 = x

9 3/4 = x

7 0

2 years ago

19. A spherical balloon has a circumference of 19cm. what is the approximate surface area of the balloon to the nearest square c

Tamiku [17]

The main formula of a spherical surface area is SA= 4 x Pi x r²
the circumference is C= 19cm =2 Pi r, so r = C/ 2Pi = 19 / 6.28 =3.02cm
so the surface area can be found by computing
SA= 4x 3.14x 3.02² =114.5, the nearest square centimeter is <span>A) 114 cm^2</span>

5 0

3 years ago