Triangle ABC is similar to triangle DEF. For triangle ABC, sides are AB = 6 cm, BC = 8 cm, CA = 10 cm. If DE corresponds to AB and DE = 9 cm, find the ...
- An equilateral triangle has an altitude of 21√3 cm. Calculate the radius of its incircle.
If each side of an equilateral triangle is 12 cm, then its altitude is equal to:
The area of a triangle is 216 cm² and the ratio of its sides is 9: 12: 15. What is the perimeter of the triangle?
- If the perpendicular from a vertex of an equilateral triangle to the opposite side is 15√3 cm, find its inradius.
- Find the area of a triangle whose base is 15.4 cm and corresponding altitude is 20.8 cm.
What is the area of triangle ABC with vertices A(1, 2), B(5, 6), and C(7, 2)?
In triangle ABC, the difference between angle A and angle B is 16°, and the difference between angle A and angle C is 8°. Determine the measure of an...
The inner-radius of a triangle is 5 cm, and the sum of lengths of its sides is 60 cm. What is the area of the triangle (in sq. cm.)?
What is the height of an equilateral triangle with a side length of 16√11 cm?
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