In ADEF, d = 1.7 cm, e = 8 cm and f=9.3 cm. Find the area of ADEF to the nearest 10th of a square centimeter.

 3.6 cm²

Heron's formula is usually used for calculating triangle area from side lengths.

The semiperimeter is ...

 s = (7.2 +1.2 +6.6)/2 = 7.5

Then the area is ...

 A = √(s(s -f)(s -g)(s -h)) = √(7.5(0.3)(6.3)(0.9)) = √12.7575

 A ≈ 3.57176 cm²

The area of ΔFGH is about 3.6 square centimeters.

Step-by-step explanation:

Hope this helps:)

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

the median here is 25. your lowest value is 14 and highest value is 48. to find the third quartile, find the medium number in between 25 and 48 which would be 42 i believe.