Sides of a triangle are in the ratio of 12: 17: 25 and its perimeter is 540cm. find its area.

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let the common ratio between the sides of the given triangle be  x.

therefore, the side of the triangle will be 12x, 17x, and 25x.

perimeter of this triangle = 540 cm

12x  + 17x  + 25x  = 540 cm

54x  = 540 cm

x  = 10 cm

sides of the triangle will be 120 cm, 170 cm, and 250 cm.

by heron’s formula,

the area of this triangle is 9000 cm2.

2? if not the correct answer you might need to provide more information

step-by-step explanation:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)