Find the number of bricks of size 20cm×12cm×5cm required to build a wall whose volume is 60m3.

Number of bricks is 5

Step-by-step explanation:

We have volume of wall 60m^3. Then we are also given number of bricks size 20cm ×12cm× 5cm.

By multiplying this number we grt 1200cm^3. But answer is needed in meter so divide 1200 with 100 because to change cm into m we need to divide with hundred. Then we have 12m^3 as volume of bricks.

To get no. of bricks we have formula

N = volume of wall ÷ volume of bricks

N = 60 ÷ 12

N = 5

Thus the number of bricks is 5.

Ask me again if you got confused i will explain it more briefly..

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq