B. A ball is thrown upwards from a rooftop,80m above the ground. It will reach a maximum vertical
height and then fall back to the ground. The height
of the ball from the ground at time t is h ,and is
given by h = 16t² + 642 +80.Find
the height reached by the ball after 1 second?

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

a

step-by-step explanation:

step-by-step explanation:

gym b charges $1.05 less per hour than gym a.

measurement of the swimming pool is given as = 7 yards 4.79 feet

first we will convert this to yards only.

1 foot = 0.33 yards

so, 4.79 feet = yards

so total yards are = yards

now we will convert this in meters.

1 yard = 0.914 meters

8.580 yards = meters

0.842 m = 0.842*100 = 84.2 cm

this becomes 7 meters and 84.2 cm

hence, the pool is 7 meters and 84.2 cm wide.