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litunglah luas permukaan bangun tertutup erikut. Diameter
=15m(pi=3,14)
A.
529,758cm^(2)
3.
529,785cm^(2)
..
529,857cm^(2)
.
529,875cm^(2)

litunglah luas permukaan bangun tertutup erikut. Diameter $=15 \mathrm{~m}(\pi=3,14)$ $\newline$ A. $529,758 \mathrm{~cm}^{2}$ $\newline$ $3$ . $529,785 \mathrm{~cm}^{2}$ $\newline$ .. $529,857 \mathrm{~cm}^{2}$ $\newline$ . $529,875 \mathrm{~cm}^{2}$

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Convert, compare, add, and subtract mixed customary units

Full solution

Q. litunglah luas permukaan bangun tertutup erikut. Diameter

=15 \mathrm{~m}(\pi=3,14)

\newline

A.

529,758 \mathrm{~cm}^{2}

\newline

3

.

529,785 \mathrm{~cm}^{2}

\newline

..

529,857 \mathrm{~cm}^{2}

\newline

.

529,875 \mathrm{~cm}^{2}

Understand shape for calculation: First, we need to understand the shape we are dealing with to calculate the surface area. Since the problem does not specify the shape, we will assume it is a circle because the diameter is given. The formula for the area of a circle is $A = \pi r^2$ , where $r$ is the radius.
Convert diameter to centimeters: Next, we need to convert the diameter from meters to centimeters because the answer choices are in square centimeters. There are $100$ centimeters in a meter, so the diameter in centimeters is $15$ meters $\times 100 \, \text{cm/meter} = 1500 \, \text{cm}$ .
Calculate radius of the circle: Now, we calculate the radius of the circle by dividing the diameter by $2$ . The radius $r = \frac{1500 \, \text{cm}}{2} = 750 \, \text{cm}$ .
Use area formula with radius: We can now use the area formula with the given value of $\pi$ ( $3.14$ ) and our calculated radius. $A = \pi r^2 = 3.14 \times (750 \, \text{cm})^2$ .
Perform area calculation: Perform the calculation: $A = 3.14 \times 750^2 = 3.14 \times 562500 \, \text{cm}^2 = 1765625 \, \text{cm}^2$ .

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