Question

20. Curved surface area = 2trh.
21. Total surface area = 2trh + r).
22. Volume of cone = trh.
23. Curved surface area = trl.
541
proof the above formula​

Answer 1

Answer:

answer is already given

I proof this problem

Step-by-step explanation:

The value of π is t

then,

curved surface area =2πrh

=2trh

total surface area =2πr(h+r)

=2tr+r

volume of cone=πrl

=trl

Henced proved

Thanking you

marked as brainlist answer

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