First, we need to find the radius of the speaker, which is half of its diameter:
radius = 6 cm / 2 = 3 cm
Next, we can use the formula for the area of a cylinder:
A = pi x radius^2 x height
A = 3.14 x 3^2 x 21
A = 3.14 x 9 x 21
A = 592.86 cm^2
Therefore, the area of the speaker to be covered is approximately 592.86 square centimetres.
Use 3.14 as pi. Use the ormula A= pi x radius squared. Mrs. Thomson buys a cylindrical speaker with a diameter of 6 centimetres and a height of 21 centimetres. She wants to wrap the speaker with a protection cover, leaving one end of the circular part open. Determine the area of the speaker to be covered.
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