Question

If the perimeter of the base of a cuboid is 15 cm and its height is 7 cm, then its lateral surface area is



could you solve you this ? ​

Answer 1

Answer:
105 cm
Step-by-step explanation:
WE KNOW THAT PERIMETER OF A RECTANGLE=2(L+B)
THE BASE OF THE CUBOID IS A RECTANGLE.
SO,
15(PERIMETER)=2(L+B)
15=2(L+B)
L+B=15/2
L+B=7.5 ---->(1)

LSA OF A CUBOID=2H(L+B)
LSA=2H(7.5) (FROM EQUATION 1)
LSA=2×7×7.5
LSA=105 cm