Answer:
The area of an equilateral triangle is:
cm²
Hence, the left bottom option i.e. cm² is the correct option.
Step-by-step explanation:
We know that the perimeter of a triangle is just the sum of its three sides.
Given that the perimeter of an equilateral triangle is 72cm.
i.e. cm
<u>Important Tip:</u>
- We can determine the length of an individual side by dividing the perimeter of an equilateral triangle by 3 as all three sides of an equilateral triangle have the same length.
Let 'a' be the length of an individual side of an equilateral triangle.
The length of an individual side of an equilateral triangle will be:
∵ The perimeter
cm
Thus,
The length of an individual side of an equilateral triangle: a = 24 cm
The area of an equilateral triangle can be determined using the formula
where 'a' is the length of an individual side
now substitute a = 24 cm in the formula
∵ 24² = 576
cm² ∵
Therefore, the area of an equilateral triangle is:
cm²
Hence, the left bottom option i.e. cm² is the correct option.
Answer:
Cost of packing 3 boxes = 3*(2LW + 2WH + 2LH) * 0.02 dollars
Step-by-step explanation:
Assume length of box = L in
height of box = H in
width of box = W in
surface area = (2LW + 2WH + 2LH) sq. in.
surface area of 3 boxes = 3*(2LW + 2WH + 2LH) sq.in.
Cost of packng one sq. in.= 0.02 dollars
Cost of packing 3 boxes = 3*(2LW + 2WH + 2LH) * 0.02 dollars
#1) 3/5; 3/5; 2/5; 3/5. There are 3 the same (3/5).
#2) A) 5/11; the drawing is attached.
B) 2/10; the drawing is attached.
Explanation#1) The first figure has 3 blocks shaded out of 5 total blocks. The second figure has 3 blocks shaded out of 5 total blocks. The third figure has 2 blocks shaded out of 5 total blocks. The fourth figure has 3 blocks shaded out of 5 total blocks.
#2) A) There are 5 blocks shaded out of 11 total blocks. The drawing has 5 different blocks shaded out of 11.
B) There are 2 blocks shaded out of 10 total blocks. The drawing has 2 different blocks shaded out of 10.
I believe it’s $20
Explanation : we would have to divide it by the fraction 2/3 to know what the total is :)