Anyone know how to solve these

1: 64π

2: 49π and 153.86

Step-by-step explanation:

For the first one we know that it has a diameter of 16 which means it has a radius of 8 (half the diameter)

To find the area of a circle use the following formula

π*r² where r is the radius

This means that the first answer is π*8^2

which is 64π

For the second one it's the same deal but the radius is 7

so the answer is 49π

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: