12) The area of a square porch is 169 square feet. Find the dimensions of the porch.
A) 12 ft by 12 ft
B) 15 ft by 15 ft
C) 13 ft by 13 ft
D) 14 ft by 14 ft

13) The area of a square porch is 81 square feet. Find the dimensions of the porch.
A) 8 ft by 8 ft
B) 9 ft by 9 ft
C) 10 ft by 10 ft
D) 11 ft by 11 ft

12) C. 13 ft by 13 ft

13) B. 9 ft by 9 ft

Step-by-step explanation:

12.

If the porch is a square, then a side length should be the same as the other side length. Therefore the side length must be the which simplified is 13.

13.

If the porch is a square, then a side length should be the same as the other side length. Therefore the side length must be the which simplified is 9.

answer: sorry but i need points

step-by-step explanation:

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m