Can someone with this? idk how to do it

a =12sqrt(2)

Step-by-step explanation:

The Pyhtagorean theorem is a^2 +b^2 =c^2

where a and b are the legs of the triangle and c is the hypotenuse

We know one of the legs is 6 and the hypotenuse is 18.

a^2 + 6^2 = 18^2

a^2 +36 =324

Subtracting 36 from each side

a^2 +36-36 = 324-36

a^2 =288

Taking the square root of each side

sqrt(a^2) = sqrt(288)

a =sqrt(288)

Knowing sqrt(ab) = sqrt(a) sqrt(b)

a = sqrt(144)sqrt(2)

a =12sqrt(2)

u what ?

step-by-step explanation:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)