Question

m?
5. Find the area of a triangular field whose sides are 91 m, 98 m and 105 m
in length. Find the height corresponding to the longest side.
6. The sides of a triangle are in the ratio 5 : 12 : 13 and its perimeter is
150 m. Find the area of the triangle.
7. The perimeter of a triangular field is 540 m and its sides are in the ratio
25:17:12. Find the area of the field. Also, find the cost of ploughing the
field at 5 per
n
8. Two sides of a triangular field are 85 m and 154 m in length and its
perimeter is 324 m. Find (i) the area of the field and (ii) the length of the
perpendicular from the opposite vertex on the side measuring 154 m.
9. Find the area of an isosceles triangle each of whose equal sides measures
13 cm and whose base measures 20 cm.
10. The base of an isosceles triangle measures 80 cm and its area is 360 cm?
Find the perimeter of the triangle.
11. The perimeter of an isosceles triangle is 32 cm. The ratio of the equal
in
2 Find the area of the triangle.
side to its boce​

Answer 1

Answer:

que no5 answer

Step-by-step explanation:

S=

2

91+98+105

=147

Δ=

s(s−a)(s−b)(s−c)

Δ=

147×56×49×42

Δ=4116m

2

Base=105m

Height =h

Δ=

2

1

× base× height

4116=

2

1

×105×h

h=78.4m.