10. mountain view middle school students work on square desktops. the area of the square desk
surface is 4 square feet. what is the length of each side of the desktop?

11. a square has an area of 81 square meters.
a. find the length of one side of the square.
b. find the perimeter of the square.

12. the area of a circle is 121 square units. the formula for the area of a circle is a=tr. what
is the radius of the circle?

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: