Find a polynomial that represents the total surface area of the rectangular solid shown in figure.

4 x^{2} - 30 x

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 x^{2} + 30 x

No worries! We‘ve got your back. Try BYJU‘S free classes today!

x^{2} + 10 x

No worries! We‘ve got your back. Try BYJU‘S free classes today!

4 x^{2} + 30 x

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $4 x^{2} + 30 x$
Surface area of cuboid with sides $a, b, c = 2 (a b + b c + c a)$
Surface area of given cuboid $= 2 (2 x . x + x .5 + 5.2 x) = 2 (2 x^{2} + 15 x) = 4 x^{2} + 30 x$

Suggest Corrections

Similar questions

The equation of a circle passing through points of intersection of the circles $x^{2} + y^{2} + 13 x - 3 y = 0$ and

$2 x^{2} + 2 y^{2} + 4 x - 7 y - 25 = 0$ and point (1, 1) is

x^{2} + y^{2} + 13 x - 3 y = 0

2 x^{2} + 2 y^{2} + 4 x - 7 y - 25 = 0

(1, 1)

x^{2} + y^{2} + 13 x - 13 y = 0

2 x^{2} + 2 y^{2} + 4 x - 7 y - 25 = 0

4 x^{2} + 4 y^{2} + 30 x - 13 y - 25 = 0

9 x^{2} + 30 x + 25

5 \sqrt{5} x^{2} + 30 x + 8 \sqrt{5}

Join BYJU'S Learning Program