Question

the given figure shows a circle with centre at O and angle AOB = 90degrees
if the radius of the circle is 40cm and pi is 3.14: calculate the area of the unshaded portion

Answer 1

the empty space above the triangle is shaded

Answer 2

@ganeshie8

Answer 3

@butterflydreamer
@iambatman

Answer 4

@butterflydreamer

Answer 5

@sleepyjess

Answer 6

@ganeshie8

Answer 7

SOMEONE PLZ HELP

Answer 8

area of circle = 4024cm
and triangle = 800cm?

Answer 9

i'm right @butterflydreamer ?

Answer 10

area of circle is
pi *(40) ^2 = 5028.6 cm^2
Area of the triangle is
1/2* 40* 40 = 800 cm^2

Answer 11

wait they want you to use pi = 3.14 so for the area of the circle you would do:
3/14* (40)^2 = 5024 cm^2

Answer 12

@butterflydreamer
SO SORRY my net had crashed
can you still help?

Answer 13

not helping

Answer 14

you said 5024-800
but in the ans it says 4568

Answer 15

hang on

Answer 16

hmm no matter how many times i redo it i still get a different answer to that one..

Answer 17

is it 3/4 times 3.14 times (10)^2?

Answer 18

@ganeshie8
@butterflydreamer @ShadowLegendX
PLZ HELP

Answer 19

OOKAY,now now can you people help me with other problems?

Answer 20

So we are trying to find the area of the figure of which consist of 360 - 90 degrees

Answer 21

Which would be 270

Answer 22

A wire is used t form a circle with diameter 35mm.The wire is also used in making 5 diameters which divide the circle into 10 equal sectors
Find 1. the total length of wire used
2.the area of each sector

Answer 23

Do you have any multiple choice answers?