Question

NEED HELP ASAP I WILL GIVE BRAINLIEST

Answer 1

Answer:

The correct option is;

She forgot to square the scale factor

Step-by-step explanation:

The parameters given are;

Dimensions of large rectangle;

Base = 30 cm

Height = 25.5

Dimensions of the small rectangle;

Base = b

Height = a

The formula to find the area of scaled dimension (small triangle) is given as follows;

Area of small triangle = (Scale factor)² × Original (or actual) area

Whereby the area, A, of a triangle is given as follows;

$A = \dfrac{1}{2} \times Base \times Height$

The smaller triangle area, $A_{small}$, should therefore be given as follows;

$A_{small} =\dfrac{1}{2} \times Base \times Height \times (scale \ factor)^2$

Plugging in the values, we have;

$A_{small} = \left (\dfrac{1}{2} \right )\times (25.5) \times (30)\times \left (\dfrac{1}{5} \right )^2 = 15.3 \ cm^2$

However, from the question, we have;

(1/2)(25.5)(30)(1/5) = 76.5 cm²

Therefore, the correct option is that she forgot to square the scale factor.

Answer 2

Answer: It's the second option

Step-by-step explanation: