How many square feet of paper do you need to cover a cube with a side 10 in. long? Round your answer to two decimal places.

Mathematics

2 answers:

Savatey [412]3 years ago

7 0

$10 in = 0.83 ft= \frac{5}{6} ft\\
A=6* (\frac{5}{6}) ^{2}=4.17$

So the answer is A. 4.17 sq ft.

exis [7]3 years ago

6 0

Answer: A. 4.17 sq ft

Step-by-step explanation:

The total surface area of cube is given by :_

$T.A.=6(side)^2$

Given: The side of cube = 10 in.

We know that 1 feet = 12 inch

∴ $1\ in.=\frac{1}{12}\ ft$

Therefore, the side of cube = $10\times\frac{1}{12}\ ft=\frac{10}{12}\ ft$

Then the total surface area of cube is given by :_

$T.A.=6(\frac{10}{12})^2\\\\=6(\frac{100}{144})\\\\=4.16666666667\approx4.17\ sq\ ft$

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A kite has a height of 36 inches and a width of 30 inches. Explain how to use the area formula for a triangle to find the area o

mote1985 [20]

Height of the kite is = 36 inches.

Width of the kite is = 30 inches

One of the ways to find the area is to draw a vertical line to break the kite into two equal triangles. Mark the base as 36 inches and height as 15 inches .

Now we will use the formula $area=\frac{1}{2}*base*height$ to find the area of each triangle. Then we will add both the areas to find the area of the kite.