You can use the surface area formula for a right cone to find the surface area of an oblique cone . true or false?

False

Step-by-step explanation:

The surface area of a right cone is given by finding the area of the base and the lateral area.

The lateral area is the area of a sector of a circle whose radius is the height of the cone.

An oblique cone is always slanted and therefore the radius of the sector in one part would not be the same as the radius of the sector in another part.

Thus, the same formula can not be used to find both the surface area of the right cone and oblique cone.

Hence, we cannot use the  the surface area formula for a right cone to find the surface area of an oblique cone .

5

step-by-step explanation:

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.