Question

Rounded to the nearest whole number, what is the approximate area of the triangle below?​

Answer 1

the approximate area of the triangle, rounded to the nearest whole number, is 126 cm².

Explanation:

To find the approximate area of the triangle, we can use the formula for the area of a triangle:

Area = (base * height) / 2

Given the dimensions:

- Length of the base: 21 cm

- Height: 12 cm

1. Substitute the values into the formula:

Area = (21 cm * 12 cm) / 2

2. Calculate the area:

Area = 252 cm² / 2

Area = 126 cm²

3. Rounded to the nearest whole number:

The area of the triangle is approximately 126 cm².

Therefore, the approximate area of the triangle, rounded to the nearest whole number, is 126 cm².

Answer 2

126 sq cm

Explanation:

The formula to calculate the area of a triangle using SAS is given as, When sides 'a' and 'b' and included angle B is known, the area of the triangle is: 1/2 × ab × sin(B)

Now, if we substitute the values we have now in the formula, we get

1/2 × (12 × 21) × sin(48)

1/2 × 252 × sin(48)

126 × sin(48)

For this step, you will need a calculator

126 × 1

= 126