Scale factor: 1:4 Area a
30 square om
Scale drawing
Object
O A. 30 square cm
O B3 120 square cm
OC. 24 square cm
O D. 480 square cm

The area of the real object is 480 square cm

Step-by-step explanation:

Scaling

Objects can be represented in a reduced or augmented size by using scaling which is basically multiplying or dividing by a constant factor.

The scale factor (f) converts a real dimension (x) into a scaled dimension (y) and vice-versa and is computed as:

If the magnitudes are areas, the scaling factor is squared:

And for volumes:

If the scale factor is 4, the area of a 30 square cm object is scaled to:

30 * 4^2 = 480

The area of the real object is 480 square cm

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

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step-by-step explanation: