Question

Tran painted pieces for a model she is building. She painted one cone-shaped piece with a diameter of 3 inches and a slant height of 2 inches using silver paint.What is the approximate area Tran painted silver?

Answer 1

Answer:

$16.5in^2$

Explanation:

From the question,we are given that the shape is a cone

Thus,we will need to use the formula for the surface area of a cone

Mathematically, we have the area as:

$A\text{ = }\pi r(r\text{ + l)}$

r is the base radius which is the diamter length divided by 2. We have that as 3/2 =1.5 inches

We have the slant height l as 2 inches

We will substitute these values into the formula shown above

$A\text{ = 3.142}\times1.5\text{ (1.5 + 2) = 16.5 sq. inches}$