Question

There is a slide in a park. One of its side walls based
message "KEEP THE PARK GREEN AND CLEANING
wall are 15m, 11 mand 6 m, find the area painted
11 m​

Answer 1

Answer:

20√2cm²

Step-by-step explanation:

s=a+b+c/2

s=15+11+6/2

s=32/2

s=16

use heron's formula

s=√s(s-a) *(s-b) *(s-c)

√16*(16-15)*(16-11)*(16-6)

√16*(1)*(5)*(10)

√16*5*10

4*5√2

20√2 cm²

Answer 2

Given:

⇒Sides: a=15m, b=11m and c=6m

⇒P=15+11+6=32m

⇒Semi perimeter=S=

2

32

, S=16m

⇒A=

s(s−a)(s−b)(s−c)

(Heron's formula)

⇒A=

16(16−15)(16−11)(16−6)

⇒A=

16×1×5×10

=

800

=20

2

m

2