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the diameter of a lower and upper ends of a bucket in the form of a frustum of a cone are 10 cm and 30 cm . if heighr is 24 then find the area if metal sheet used in making bucket ?

Posted by Yukku Malik 7 years, 9 months ago

CBSE > Class 10 > Mathematics

3 answers

Nyayir Riba 7 years, 9 months ago

Phle height se slant height nikal lejiye formula[l=root h²+(r1-r2)] Ar of metal sheet =c.s.a of frustom +base of lower end(circle) pie(r1+r2)slant height + pie×r2². 22/7(15+5)2root194+22/7×5×5. 22/7[20×2root194+25]. 22/7[40root194+25]. 22/7×40root194 + 22/7×25. (880root194+550)/7 cm²

0Thank You

Yukku Malik 7 years, 9 months ago

thanks but pls someone tell me complete ans

0Thank You

Nyayir Riba 7 years, 9 months ago

May be (880root194+550÷7)not sure and slant height =root776

1Thank You

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