Question

write prime factors
A) 18
B ) 28
C ) 32
D ) 56​

Answer 1

Answer:

Step-by-step explanation:

Let the sides of the traingular part be a, b and c

a = 5 cm

b = 5 cm

c = 8 cm

s (semi - perimeter) = (a + b + c)/2

=> s = 18 cm/2

=> s = 9 cm

Area of 2 isosceles triangles

= 2√s(s - a)(s - b)(s - c)

{using Heron's Formula which is

√s(s - a)(s - b)(s - c)

so for two it will be

2√s(s - a)(s - b)(s - c)}

= [2√9(9 - 5)(9 - 5)(9 - 8) ] cm²

= [2√(9 * 4 * 4 * 1)] cm²

= (2√144) cm²

= (2 * 12) cm²

= 24 cm²

Hence, Meena would require 24 cm² of cloth to make the mask......

Answer 2

Step-by-step explanation:

18 = 2,3,3

28= 2,2,7

32 = 2,2,2,2,2

56 = 2,2,2,7

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