THE CIRCUMFERENCE OF THE BASE OF A CONE IS 44CM AND THE SLANT HEIGHT IS 25CM FIND THE CURVED SURFACE AREA OF THE CONE
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Answered by
3
circumference of circular part of cone=2.pi.r=44cm
2 x 22/7 x r=44cm
r=7cm
now
curve surface area of cone=pi.r.l
where l is slant height and r is the radius
area =22/7 x 7 x 25=550cm^2
2 x 22/7 x r=44cm
r=7cm
now
curve surface area of cone=pi.r.l
where l is slant height and r is the radius
area =22/7 x 7 x 25=550cm^2
Answered by
7
Circumference =2πr
2 πr =44 cm
2× 22/7 × r = 44 cm
22/7 r = 44/2 = 22cm
r = 22 × 22 / 7 = 7 cm
l (slant height) = 25 cm
C.S.A = π r l
= 22/7 × 7 × 25 = 550 cm²
2 πr =44 cm
2× 22/7 × r = 44 cm
22/7 r = 44/2 = 22cm
r = 22 × 22 / 7 = 7 cm
l (slant height) = 25 cm
C.S.A = π r l
= 22/7 × 7 × 25 = 550 cm²
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