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avatar+107 

a) If each square of the grid below is 0.5 cm by 0.5 cm, how many centimeters (cm) are in the perimeter of the blue figure? 

 

 

b) If each square of the grid below is 0.5cm by 0.5cm , how many square centimeters are in the area of the blue figure?

b[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]

 Mar 14, 2019
 #1
avatar+102355 
+1

Perimeter  =  42 * 0.5 cm  =   21 cm

 

Area = 34 * (0.5)^2  =  34 * .25  =   34  * (1/4)  = 34/4  = 17/2  = 9.5 cm^2

 

 

cool cool cool

 Mar 14, 2019
 #2
avatar+107 
+1

@CPhill so the answer is 9.5 ^ 2?

SoulSlayer615  Mar 14, 2019

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