0.4 and 0.40 are the same amount is the word form of the decimals the same?

.4 and .40 are indeed the same amount.

We usually drop the 0 in the 100'ths place when it is not necessary for indicating money or solving a problem with 2 decimals.

Also realize that .400 .4000 etc are all the same as well.

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.