Question

solve question no. 4 &5 fastt.....!!!

Answer 1

Answer:

4) 9 cm and 15 cm

5) 2.494 cm²

Step-by-step explanation:

(4)

Let base = 3x

Let height = 5x.

Area of triangle = 67.5 cm².

We know that Area of triangle = (1/2) * b * h

⇒ 67.5 = (1/2) * (3x) * (5x)

⇒ 135 = 15x²

⇒ x² = 9

⇒ x = 3.

Then:

⇒ 3x = 9 cm

⇒ 5x = 15 cm.

Therefore, base = 9 cm and height = 15 cm.

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(5)

Given side = 2.4 cm

We know that Area of equilateral triangle = √3/4 * a²

⇒ √3/4 * (2.4)²

⇒ √3/4 * 5.76

⇒ √3 * 1.44

⇒ 2.494 cm²

Therefore, Area of an equilateral triangle = 2.494 cm²

Hope it helps!

Answer 2

Hlo mate your answer is in the pic ....