The variable b varies directly as the square root of c. If b = 100 when c = 4, which equation can be used to find other combinations of b and c a. b=25c
b. b√c=50
c. b=200c
d. b=50√c

think the answer would beb

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.