Question

What is the perimeter of triangle ABC ?

b) What is the area of the door?

c) What is the perimeter of the door ?

d) What is the area of the shaded portion ​

Answer 1

Answer:

a) s =10

perimeter of triangle = S×S×S

= 10×10×10

= 1,000 cm

b) length=5 cm

breath=2 cm

Area of rectangle door = l×b

= 5×2

= 10 cm

c) perimeter of door = 2×(l+b)

= 2×(5+2)

= 2×7

= 14 cm