The Curved surface area and Total surface area of a cone having slant height $^{'} l^{'}$ and base radius $^{'} r^{'}$ respectively are
&
.

π r (l + r)

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

2 π r l

No worries! We‘ve got your back. Try BYJU‘S free classes today!

π r l

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

π l r^{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

π (l^{2} + r^{2})

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct options are
A $π r (l + r)$
C $π r l$
$Cone: Length, l Base radius, r Curved surface area = π r l$

$Total surface area = Curved Surface Area + Base Area = π r l + π r^{2} = π r (l + r)$

Suggest Corrections

Similar questions

Q. The total surface area of a cone whose radius is

\frac{r}{2}

and slant height 2l is
(a)

2 π r (l + r)

(b)

π r (l + \frac{r}{4})

(c)

πr (l + r)

(d)

2 π r l

Question 5
The total surface area of a cone whose radius is $\frac{r}{2}$ and slant height 2l is:

A) $2 π r (l + r)$
B) $π r (l + \frac{r}{4})$
C) $π r (l + r)$
D) $2 π r l$

Q. The curved surface area of a cone of radius 'r', height 'h' and slant height 'l' is ___.

If the area of a circle with radius $r$ is equal to the curved surface area of cone with radius $r_{1}$ and slant height $l$ then the value of $r_{1}$ in terms of $r$ and $l$ is:

If the area of a circle with radius r is equal to the curved surface area of a cone with radius $r_{1}$ and slant height l then the value of $r_{1}$ in terms of r and l is:

Join BYJU'S Learning Program

The Curved surface area and Total surface area of a cone having slant height ′l′ and base radius ′r′ respectively are & .

The correct options are A πr(l+r) C πrlCone: Length,l Base radius,rCurved surface area=πrl Total surface area=Curved Surface Area + Base Area=πrl+πr2=πr(l+r)

The Curved surface area and Total surface area of a cone having slant height $^{'} l^{'}$ and base radius $^{'} r^{'}$ respectively are
&
.

The correct options are
A $π r (l + r)$
C $π r l$
$Cone: Length, l Base radius, r Curved surface area = π r l$

$Total surface area = Curved Surface Area + Base Area = π r l + π r^{2} = π r (l + r)$