Aswimming pool is circular with a 40-ft diameter. the depth is constant along east-westlines and increases linearly from 2 ft at the south end to 7 ft at the north end. find the volume of water in the pool.

volume will be equal to 5,655 ft³

Step-by-step explanation:

diameter of swimming pool = 40 ft

depth increases from east-west lines is from 2 ft to 7 ft

so the average depth of the swimming pool can be calculated by

hence average depth comes out to be  4.5 m

volume of water in the pool will be equal to the volume of the pool

volume =

            =

            = 5,654.86 ft³

volume will be equal to 5,655 ft³ approximately

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )