1. The diagram represents a cone. The height of the cone is 12 cm.
The diameter of the base of the cone is 10 cm.
Calculate the curved surface area of the cone.

2. A sphere has a volume of 500 m3.
(b) Calculate the radius of the sphere. Give your answer correct to 3
significant figures.

1. The curved surface area of the cone is 282.74 cm²

2. Radius of sphere r = 4.924 m

Step-by-step explanation:

1. Height of cone = 12 cm

Diameter of base of cone = 10 cm

Surface Area of cone = ?

The formula used is:

h= 12 cm

r = diameter/2 r = 10/2 = 5 cm

Putting values and finding surface area

So, the curved surface area of the cone is 282.74 cm²

2. Sphere of Volume = 500 m³

We need to find radius of sphere

The formula used is:

Putting values and finding radius of sphere

So, Radius of sphere r = 4.924 m

correct answers below: