Use the Pythagorean theorem:
Answer:
197 in ^2 (answer B of the list)
Step-by-step explanation:
Notice that this figure has a total of 6 faces, four of which are rectangles (whose area is calculated as "base times height") and two trapezoids (whose area is (B+b)H/2 ).
The total surface area is therefore the addition of these six areas:
Rectangles:
5 in x 5 in = 25 in^2
5 in x 5 in = 25 in^2
5 in x 6.4 in = 32 in^2
9 in x 5 in = 45 in^2
Trapezoids:
Two of equal dimensions: B = 9 in, b = 5 in, H = 5 in
2 * (9 in + 5 in) 5 in /2 = 70 in^2
Which gives a total of (25 + 25 + 32+45 + 70) in^2 = 197 in^2
This agrees with answer B of he provided list.
The answer is c hope this helps!!!
Answer:
x=2
Step-by-step explanation:
x turns out to be 2...
I translate the task in english "Silvia and Rebecca buy on line 10 cubes of styrofoam to coated fabric.The size of each cube contained in the website are 150x150x150mm.May be sufficient 2m^2 of cloth?You why?No why?"
We need to find the area of full surface of cube. The formula is 6 * A^2.
150mm=15sm=0,15m.
0.15^2=0.0225 m^2 of fabric for one side.
Cube have 6 sides.
6*0.0225=0.135 m^2 of fabric for one cube.
And we need to cover 10 cubes, so we must to multiply 0.135 by 10.
10*0.135=1.35 m^2.
Answer: it's enough of 2 m^2