Find the surface area of the square pyrimid if the slant height is 13mm

Step-by-step explanation:

if the base=x mm

then base area=x²

area of one slant surface=1/2×x×13=13x/2

area of four slant surfaces=4×13x/2=26x

Total suface area=x²+26 x sq .units.

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. : )

clock

step-by-step explanation: