108cm2
90cm2
80cm2
72cm2
Correct answer is B
V = L x B x H
V = 2x×x×x=2x3
= 54cm3
i.e. 2x3 = 54
x3 = 542 = 27
x = 3√27
x = 3
L = 2x i.e. 2 x 3 = 6cm
B = x i.e. x = 3cm
H = x i.e. x = 3cm
but A = 2(LB + LH + BH) = 2(6 x 3) + (6 x 3) + (3 x 3) = 2(18 + 18 + 9) = 2(45)
= 90cm2
In the diagram, GI is a tangent to the circle at H. If EF||GI, calculate the size of ∠EHF ...
Find the product xy if, x, 3/2, 6/7, y are in G.P ...
Express 0.0000407, correct to 2 significant figures ...
If the mean of five consecutive integers is 30, find the largest of the numbers ...
In the diagram, PQR is a circle with center O. If ∠OPQ = 48°, find the value of M. ...
If the equations x2 - 5x + 6 = 0 and x + px + 6 = 0 have the same roots, find the value of p....
The angles marked in the diagram above are measured in degrees. Find x ...