Question

150% of d sq.cm is 126 sq.cm, what is the value of d?

Answer 1

Step-by-step explanation:

Consider a given The given The length, breadth and height of a cuboid are in the ratio 5:4:2 and the total surface area is 1216cm2,

Let, the dimension of cuboid are l=5x,b=4x and h=2x

Now, the surface area of cuboid =2(5x×4x+4x×2x+2x×5x)=76x2

Now,

76x2=1216

x2=16

x=4

Dimensions of cuboid are,

l=5x=5×4=20cm,b=4x=4×4=16cm

h=2x=2×4=8cm

Volume of cuboid=l×b×h=20×16×8=2560cm3

 

Hence, this is the answer.

Answer 2

84

Step-by-step explanation:

150% × d cm² = 126 cm²

150 × d = 126

126 ÷ 150/100

126 × 100/150

126 × 2/3

42 × 2

84