Question

the radius and height of a cone are in the ratio 5 ratio 12 the area of the base of cone is 78.5 CM square find the area of the curved surface take pi is equal to 3.14

Answer 1

Answer:

the radius and height of a cone are in the ratio 5 ratio 12 the area of the base of cone is 78.5 CM square From a piece of cardboard,in the shape of a trapezium ABCD, and AB parallel to CD and angle BCD=90 , quarter circle is removed.given AB=BC=3.5 cm and DE=2 cm. the area of the remaining piece of the cardboard.

Step-by-step explanation:

In the trapezium PQRS if the midpoints of the two non -parallel sides PS and QR are X and Y respectively then XY

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