Question

If the area of an equilateral triangle is 25√3 cm², then the length of each side of the triangle is:

• A. 10 cm
• B. 5 cm
• C. 12 cm
• D. 8 cm

Answer 1

Answer:

A. 10 cm

equilateral triangle area=$\frac{a^2\sqrt3}{4}$

$\frac{a^2\sqrt3}{4}=25\sqrt3$

$a^2=25\times4$

$a=5\times2=10$