Question

An umbrella is made by stitching 10triangular pieces of cloth, sides of each piece measuring 20 cm, 50 cm and 50 cm. (:√=.)(i)What will be the area ofclothrequired for the umbrella?(ii)Find the height of each triangle corresponding to base 20cm.

Answer 1

Answer:

There are 10 triangles, out of which 5 of black and 5 of grey color. Now,

Area of of each cloth=5× area of 1 triangle

Area of triangle=s(s−a)(s−b)(s−c),s=2a+b+c=250+20+50

s=60㎝

∴ar△=60(60−50)(60−20)(60−50)=60×10×40×10

=6×10×10×4×10×10=2×10×106=2006㎠

Area of each cloth required=(5×2006)㎠=10006㎠

Step-by-step explanation:

I hope it will help you.

.

.

.

.

.

.

.

please mark me as a thanks