Mr. Vadar washed 2
7
of his laundry. His son washed
1
3
of it. Who washed most of the laundry? How much of the laundry still needs to be washed?

i think it's 2 7

Step-by-step explanation

the ratio with the bigger number first would be the answer because it's bigger than 1 3.

His Son

Step-by-step explanation:

2/7=0.29

1/3=0.33

In total 19/21 of the laundry still needs to be complete.

9.5% is done

90.5% needs to be done between the both of them.

71.43% of Mr. Vardar's laundry needs to be done.

66.67% of his sons needs to be done.

  6 +2√3 ft²

Step-by-step explanation:

Given a triangular pyramid with ...

Find

Solution

Since corresponding edges are the same length, the area of each of the three faces is (6 ft²)/3 = 2 ft². This can be computed by ...

  A = (1/2)s²·sin(α)

where s is the lateral edge length and α is the angle at the apex formed by the two edges that meet there. Filling in the given values, we find ...

  2 ft² = (1/2)(2 ft)²·sin(α)

  1 = sin(α)   ⇒   α = 90°

That is, each face of the pyramid is an isosceles right triangle with legs of length 2 ft. The hypotenuse of that triangle, the base edge of the pyramid, is then 2√2 ft.

So, the base is an equilateral triangle with edge lengths 2√2 ft. Its area can be computed from ...

  A = (√3)/4·s²

where s is the edge length of the equilateral triangle. That is, the base area is ...

  A = (√3)/4·(2√2)² = 2√3 . . . . square feet

So, the total surface area of the pyramid is ...

  (6 +2√3) ft² ≈ 9.4641 ft² . . . . . total surface area