Question

Mathematics
Class IX
Topi - Peron's Formula
N
-* Find the area of a triangle whose base and altitudes are 8cm and 5 cm:
2. Find the area of equilateral triangle whose sides are 4cm each.
3. The area of an equilateral triangle is 16v3 cni? then find the length
of each side of the triangles.
H. The semi perimeter of the triangle is 96 cm and its sides are in the rativ
3:4: 5. Find the area of the triangle.
-5. The cost of fencing the field in the form of a triargle with sides 16m,
12m and 18 m. The rate of fencing is Rs. 25 per meter
.
. Find the area of a triangle whose perimeter is 180 cm and its two sides
are 80 cm and 18 cm . Calculate the altitude of triangle corresponding
to its shortest side.
7. The perimeter of an equilateral triangle is 60 cm.Find its area.​

Answer 1

Answer:

the length around a trapezium shaped plot ABCD is a team if BC is equal to 24 CD is equal to 12 and AD is equal to 28 what will be the area of this plot the side ab is perpendicular to the parallel side AD and BC

Answer 2

Answer:

• area of triangle

20cm^2

• area of equilateral triangle

16rootunder3 cm^2