Last one plz help 10 points and I’ll give brainliest 13,14,15,16,17,18,19,20,21,22

13.7

Step-by-step explanation:

to work this out you need to find the area of the square.

The formula for working out the area of a square is to multiply the length and the width together.

So you would multiply 8 by 8 to give the area of this square.

You would then need to work out the area of the circle using the formula:

=50.27

Then to work out the area shaded you will subtract the area of the circle from the area of the square to give you the area of the shaded region.

=13.73

rounded to 13.7

This is for question 22

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92