54 is a common denominator between 1/6 and 1/9
Answer:
88
Step-by-step explanation:
First find the area of the fountain using the area formula of a circle.
The formula for area is
. Here the radius is 5 ft. So the area is
.
We will subtract the area of 78.5 from the larger circle of the brick path and fountain to find only the area of the brick path.
The larger circle has an area of
where the radius is 9ft.
Subtract to find the area of the path: 254.34 - 78.5 = 175.84. Divide this area by 2 to find the number of bricks needed since each brick is 2 square feet.
175.84/2 = 87.92 = 88 bricks
So 9 students = 25% (100%-75%=25%)
100 : 25 = 4
4 * 9 =
36 students
The area of the sector in the circle can be calculated using the formula:
A = <span>π r</span>² θ / 360
where r is the radius and θ is the area subtended by sector. So,
A = π (10)² (37/360)
The answer is the first option.
Answer:
168÷4
=42
Distance covered by train in 4 hours=168kms
Distance covered by train in 1 hour =168kms÷4hrs
=42
Thus distance covered by train in 1 hour is 42kms.