Question

9. Find the area of triangle whose
sides are 15 m, 11 m and 6 m.
o 20 m2
O 40 m2
O 2012 m2
10. Write the decimal of 329/400 *​

Answer 1

Answer:

28.28

0.8225

Step-by-step explanation:

9. area of triangle =

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

where s. =

$\frac{a + b + c}{2}$

therefore s =

$\frac{15 + 11 + 6}{2}$s = 16

insert value in equation 1 we get:

$\sqrt{16(16 - 15)(16 - 11)(16 - 6)}$

=

$\sqrt{16 \times 1 \times 5 \times 10}$

=

= sqrt of 800 ~ 28.28

10. decimal of 329/400 = 0.8225