Question

hey guys plz answer this
its urgent....​

Answer 1

Answer:

area of 1 triangular strip =

$\sqrt{s(s - a)( s-b )( s- c)}$

s = 50+50+20/2 = 60cm

area =

$\sqrt{60(60 - 50)(60 - 50)(60 - 20)}$

area =

$\sqrt{60 \times 10 \times 10 \times 40}$

area = 400√6cm²

area of 10 strips = 400√6 × 10 = 400√6 cm²