Question

Sections :
MATH
Q No: 1/20
Marks:1
1. If the perimeter of one face of a cube is 40 cm, then the sum of lengths of its edge is
(a) 80 cm
(b) 120 cm
(c) 160 cm
(d) 240 cm​

Answer 1

Answer:

CONCEPT BASED ON THE PERIMETER OF SQUARE AND ADDITION.

Step-by-step explanation:

AS WE KNOW THAT ALL OF THE 6 FACES OF CUBE ARE SQUARE.

SO PERIMETER OF SQUARE GIVEN IS 40cm.

SO,

PERIMETER OF SQUARE = 4 × L

PERIMETER OF SQUARE = 40cm.

40cm = 4 × L

L = 40 / 4

L = 10cm.

ALL THE EDGES OF CUBE ARE ON FIGURE 12.

SO,

1 EDGE = 10cm

12 EDGES = ??????

12 × 10 cm = SUM OF ALL EDGES.

120cm = SUM OF ALL EDGES.

SO YOUR FINAL ANSWER IS 120cm.

HOPE THIS ANSWER HELPS YOU !!!!!

MARK ME AS BRAINLIEST !!!!!!!

AND PLEASE FOLLOW ME !!!!!!!

REGARDS ,