Question

Toula has just baked a cake in the shape of a rectangle. She
wants to divide the cake into two right-angled triangles by
cutting along a diagonal of the cake. Toula is then going to place
a cake ribbon around the outside of each of the two triangular
pieces of cake. If the length of the cake is 32 cm and its width is
24 cm, how much cake ribbon will she need to buy, giving your
answer to an appropriate accuracy.

Answer 1

Answer:

192 cm

Step-by-step explanation:

length of the ribbon needed = perimeter of right angled triangle x 2

to determine perimeter, the value of the hypotenuse needs to be known

The Pythagoras theorem : a² + b² = c²

where a = length

b = base

c =  hypotenuse

32² + 24²

= 1024 + 576

= 1600

square root = 40

length of rope = 2 x (40 + 32 + 24) = 192