The dimensions of triangle B are twice the dimensions of triangle A. The area of triangle A is 28 cm2.

What is the area of triangle B?

A.

112 cm2

B.

18 cm2

C.

12 cm2

D.

27 cm2

Area of triangle B is 112 cm²

Option A is correct option.

Step-by-step explanation:

The dimensions of triangle B are twice the dimensions of triangle A.

Area of triangle A = 28 cm²

We need to find area of triangle B

We know that if base = b and height = h for triangle A

The area of triangle A will be:

The dimensions for triangle B will be:

Putting in formula we get:

SO, we get

We have Area_A = 28 cm²

Area of triangle B Area _B is:

So, Area of triangle B is 112 cm²

Option A is correct option.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

step-by-step explanation: