Math, asked by kardavibarbiebubble, 1 year ago

If base area of cylinder is 616cm square.find it's height if lsa is 15400cm square

Answers

Answered by omput23
1

base area of circle=πrsquare

616 =22/7×r square

616×7/22=r square

196=r square

r=14

tsa=2πr(r+h)

15400=2×22/7×14(14+h)

15400=22×4(14+h)

15400=88(14+h)

15400/88=14+h

175=14+h

h=175-14

h=161

hope it will work ......

Answered by omjadhav1082003
0

Answer:25 cm

Step-by-step explanation: lre r=radius

h=height of cylinder

Area of base =616sq cm

Base is circular

:.Area of base =πr2^

πr2^=616 sq cm

Total surface area of cylinder=πr^2h

:.πr^2h=15400

Bur πr^2=616sq cm

:.15400=.πr^2h

:.15400=616*h........because πr^2=616

15400/616=h

:.25=h

:.h =25 cm

:.The height of cylinder is 25cm

Please choose it as brainlinest

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