Question

MA
AL
floor is made up of 16
triangular, the sides of
the triangle being 9 cm,
28 cm and 35 cm (See
figure). Find the cost of
polishing the tiles at the
8. A floral design on
which
и a
are
tiles
rate of 50 p per cm2.​

Answer 1

Answer:

Step-by-step explanation:

₹ 705.60

Step-by-step explanation:

Sides of a triangle are:

A – 9

B-28

C-35

S = a+ b+ c/2

=9+28+35/2

=72/2 =36 cm

Area of triangle = √s(s-a)(s-b)(s-c)

=√ 36(36-9)(36-28)(36-35) cm²

=√36*27*8*1 cm²

=3*2*3*2√3*2 cm²

=36√6 cm²

=(36*2.45) cm ²

=88.2 cm² (apx)

Area of 16 triangles  

= (16*88.2) cm²

=1411.2 cm²

Rate of polishing = ₹ 0.5 /cm²

=(0.5*1411.2)=₹ 705.60

Hope it helps

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