BellaBel BellaBel

23-02-2017
Mathematics

contestada

Find the surface area of a cone with a radius, r, of 5cm and a slant height, l, of 5cm.

A. 134.4 cm2
B. 140 cm2
C. 157 cm2
D. 163 cm2

Respuesta :

cameronlgill cameronlgill

23-02-2017

the answer is c 157cm2

Answer Link

ChandrikaP ChandrikaP

23-02-2017

A=πr(r+√h^2+r^2)

A=π*5(5+√25+25)
A=π*5(5+√50)
A=189.61cm

sorry u dont have answer in options

are u sure both height and radius=5 cm?

Answer Link

Otras preguntas

In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r). A rough coat boar and a soft coat sow mate. They produce sev

If 5 times the value of a number is increased by 3, the result is 28. What is the number?

Rabies is a deadly disease that progresses rapidly. What type of treatment would be best for a person who has not been vaccinated for rabies and has been bitten

what is 5.50 x (20 + 18.50)?

Kelly sits on a rock. her weight is an action force. describe the reaction force

true or false: Penicillin, ampicillin, and bacitracin work by disrupting the synthesis of ribosomes True or false: drugs that disable or kill infectious bacteri

If 5 times the value of a number is increased by 3, the result is 28. What is the number?

A car traveling in a straight line has a velocity of 5.0 m/s. After an acceleration of 0.75 m/s/s, the cars velocity is 8.0. In what time interval did the accel

I need help please Find the value of numerical expression can you explain it to me please 2^4

during the day, when the sun is shining, the ground gets warm mainly as a result of 1. the emission of greenhouse gasses from factories and vehicles 2.heat from