Question

25. A ABC is isosceles with AB = AC = 5 cm and BC = 4 cm. The height AD from A to BC is 3 cm. Find the area of A ABC. What will be the height from ċ to AB?
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Answer 1

Answer:

Area = 1/2×3×4 = 6cm

Step-by-step explanation:

area = 1/2 × base × height

1/2×4×3

6cm

height from c to AB is 2.5cm

Answer 2

Answer:

6 cm^2 , 2.4cm

Step-by-step explanation:

In ΔABC, AD=6cm and BC=9cm

Area of triangle= 1/2×base×height

=1/2×BC×AD

= 1/2×4×3

=6cm

Again, Area of triangle= 1/2×base×height

= 1/2×AB×CE

⇒6= 1/2×5×CE

⇒ CE= 6×2/ 5

⇒ CE=2.4cm

Thus, height from C to AB is 2.4cm.