What is the value of a, if a^2 – 64 = 0 and a > 0?
a) 0
b) 4
c) 8
d) 16

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk