ranti4sure2010
ranti4sure2010 ranti4sure2010
  • 24-02-2020
  • Mathematics
contestada

A solid cylinder of radius 7cm is 10cm long.find it's total surface area
a. 70πcm3
b. 210πcm3
c. 238πcm3
d. 189πcm3​

Respuesta :

PollyP52 PollyP52
  • 24-02-2020

Answer:

C.  238π  cm^3.

Step-by-step explanation:

Surface area = 2 * area of the circular ends + area of the curved length

= 2π r^2 + 2π r* l

= 2 π 7^2 + 2π 7 * 10

= 98π + 140π

= 238π  cm^3.

Answer Link
Onoriodefelix
Onoriodefelix Onoriodefelix
  • 24-02-2020

Answer:

c. 238πcm3

Step-by-step explanation:

Total surface area =

2pirh + 2pir^2

Given radius r = 7cm and

Height h = 10cm

Total surface area = 2 x pi x 7 x 10 + 2 x pi x (7)^2

140pi + 2 x pi x 49

140pi + 98pi

238pi cm^3

Answer Link

Otras preguntas

One hypothesis about the origin of the building blocks for life is that they I were
Following the rule of Oliver Cromwell, _______ agreed to the Habeas Corpus Act and to other demands of Parliament.
Why does Faustus originally ask Mephastophilis to bring him Helen of Troy?
Write 5 as a fraction with 6 in the denominator
Rachel bought some buttons2/4 are yellow 2\8 are red which color button was more bought
what molecule makes the trunk of a tree sturdy
The accumulation of knowledge and technology that developed during the "Dark Ages" culminated in the A. Reformation. B. Crusades. C. Renaissance. D. feudal peri
The Turks were defeated by Crusaders at Jerusalem because a. they were severely outnumbered. c. they did not have horses. b. they suffered from the heat. d. the
What is a device that converts energy of motion into electrical energy
What is 28- 12.5% decrease???