题干

求下面圆柱的体积、表面积.

上一题 下一题 0.0难度 选择题 更新时间:2021-11-28 11:38:46

答案(点此获取答案解析)

解:体积:
3.14×(5÷2)²×6
=3.14×6.25×6
=117.15(立方厘米)
表面积:
3.14×(5÷2)²×2+3.14×5×6
=3.14×6.25×2+3.14×30
=39.25+94.2
=133.45(平方厘米)
答:圆柱的体积是117.75立方厘米;表面积是133.45平方厘米.

同类题1

阅读理解

Dog parks on Long Island

    For dog lovers, parking dogs sometimes might be a problem. From entertainment facilities to park tips, we've collected everything you need to know before you take your pet for an afternoon of outdoor fun.

    ⒈Amagansett, Napeague State Park

Amagansett, Napeague State Park, Route 27. Dogs are allowed on a leash(狗链)in this undeveloped park, which includes trails, wooded areas and roads. Access to the beach. No water source or public bathrooms.

    ⒉East Meadow, Eisenhower Park

East Meadow, Eisenhower Park, Salisbury Park Drive and Stewart Avenue, East Meadow. In addition to dhaded seating, each run has a water source. Permits are free, but required.

    ⒊Calverton, Isaac Park

Calverton, Isaac Park, on the Grumman Site, within Veteran's Memorial Park. Separated by large and small dogs, this half-acre plot has shade trees, seating and access to the beach. Bring your own water' leashed dog can be walked on some trails; Town of Riverhead residents only.

    ⒋Broolhaven, Robinson Duck Farm Dog Park

Broolhaven, Robinson Duck Farm Dog Park, 2903 Montauk Hwy. This 3-acre park has areas for large and small dogs, but no water source. Large-dog area includes a training course. $18 yearly pass for village residents.

    ⒌Massapequa, Clocks Boulevard Park

Massapequa, Clocks Boulevard Park, off Louden Avenue and Sunrise Highway. At larger than 1 acre, this dog park has lots of room to run and wooded areas for shade. Open dawn to dusk. Water sources are available in both the large- and small-dog areas. It has enough parking and seating. Open to Town of Oyster Bay residents.