Question

plz help urgent mensuration​

Answer 1

Step-by-step explanation:

(i) Let initially the edge of the cube be l.

Initial surface area = 6l2

If each edge of the cube is doubled, then it becomes 2l.

New surface area = 6(2l)2 = 24l2 = 4 × 6l2

Clearly, the surface area will be increased by 4 times.

(ii) Initial volume of the cube = l3

When each edge of the cube is doubled, it becomes 2l.

New volume = (2l)3 = 8l3 = 8 × l3

Clearly, the volume of the cube will be increased by 8 times.

HOPE IT HELPS

Answer 2

Answer:

87 m^2

Step-by-step explanation:

First we should find the area of the triangle.

Length of the rectangle

=11m, Breadth of the rectangle =5 m,Area of the rectangle =55m sq

Area of two trapezium =2*1/2* 4 *16 =32 m sq as per the formula.

Ans =55+32 =87m sq