If each square of the grid below is $0.5\text{ cm}$ by $0.5\text{ cm}$, how many square centimeters are in the area of the blue figure? [asy]
unitsize(0.5cm);
path p=(1,0)--(1,1)--(2,1)--(2,2)--(1,2) --(1,3)--(0,3)--(0,5)--(1,5)--(1,4) --(2,4)--(2,6)--(3,6)--(3,5)--(6,5) --(6,6)--(7,6)--(7,4)--(8,4)--(8,5) --(9,5)--(9,3)--(8,3)--(8,2)--(7,2) --(7,1)--(8,1)--(8,0)--(6,0)--(6,1) --(3,1)--(3,0)--cycle;
fill(p, blue);
draw(p, black+2);
for(int i=0; i<10; i+=1){ draw((i,0)--(i,6),black+0.6); };
for(int j=0; j<7; j+=1){ draw((0,j)--(9,j),black+0.6); };
[/asy]

8.50 cm²

Step-by-step explanation:

The dimension of each square is given as 0.5cm by 0.5cm

The area of the a square is, a²

Where, a = side length

Area of each square = 0.5² = 0.25cm

The number of blue colored squares = 34

The total area of the blue colored squares is :

34 * 0.25 = 8.50cm²

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )