Answer:
perimeter of a rectangle = 5/2 Foot or 2.5foot
Step-by-step explanation:
from the question given that the rectangular frame has a length of 3/4
the rectangular frame has a width of 1/2 foot
perimeter of the rectangle = ?
<u>solution</u>
in order to find the perimeter of a rectangle, we need to know the value of the length and the value of the width and it has been given in the question.
the formula for finding the perimeter of a rectangle = 2L + 2W
perimeter of a rectangle = 2 ( 3/4) + 2 ( 1/2)
perimeter of a rectangle = 3/2 + 1
perimeter of a rectangle = 3 + 2/ 2
perimeter of a rectangle = 5/2 Foot or 2.5foot
Therefore the perimeter of the rectangle whose length is 3/4 foot and width is 1/2 foot is equal to 5/2 foot.
All equilateral triangles are acute, as all the angles are 60 degrees.
Answer:
answer of 13) Lenght of one edge of this cube = 3cm
answer of 14) The area of BCE = 25 cm^2
Step-by-step explanation:
Any cube has six identical sides.
Let one side have an area of A.
Let the lenght of one cubic side be L.
L * L = A
So this results in L = SQRT (A)
All six A combined add up to 54 cm^2.
Then 6 * A = 54
A = 54/6 = 9 cm^2
L = SQRT (9)
Lenght of one edge of this cube = 3cm
To find the area of BCE you can simply subtract the area of CDE from the biggest triangle BDE.
2 * BDE = {5+4) * 10
so BDE = 45
2 * CDE = 4 * 10
so CDE = 20
BCE = BDE - CDE
BCE = 45 - 20
The area of BCE = 25 cm^2
