Answer:
Problem a ) Problem b )
r ⇒ 4 cm, r ⇒ 7 ft,
Base Area ⇒ ( About ) 50.2 cm^2, Base Area ⇒ ( About )153.9 ft^2,
Volume ⇒ ( About ) 803.8 cm^3 Volume ⇒ ( About ) 769.3 ft^3
Step-by-step explanation:
Problem a )
~ Provided that r ⇒ radius... ~
1. The Base of this cylinderical object is, of course, a circle. Knowing that, the Base area of the cylinder can be computed through πr^2, and with the diameter as 8 cm, r ⇒ 8/2 = 4 cm. Now we know that r ⇒ 4 cm, and that Base Area ⇒ π ( 4 )^2 ⇒ 16π ⇒ 50.24 cm^2.
2. With the Base Area being 50.24, we can calculate the Volume through the basic formula Base * height, and with the height being 16 cm:
Volume ⇒ ( 50.24 ) * ( 16 ) ⇒ 803.84 cm^3.
Problem b )
~ Provided that r ⇒ radius... ~
1. The Base of this cylinderical object is, of course, a circle. Knowing that, the Base area of the cylinder can be computed through πr^2, and with r ⇒ 7 ft we know that the Base Area ⇒ π ( 7 )^2 ⇒ 49π ⇒ 153.86 ft^2.
2. With the Base Area being 153.96, we can calculate the Volume through the basic formula Base * height, and with the height being 5 ft:
Volume ⇒ ( 153.86 ) * ( 5 ) ⇒ 769.3 ft^3.
